James C. Scott’s prodigious work has influenced numerous fields of inquiry, often profoundly, as documented in this forum. This essay suggests how an extension of Scott's theoretical apparatus might provide fresh understanding of stalemated contentious politics of great importance to rural well-being.

The escal light gland of three different-sized specimens of the deep-sea anglerfish Haplophryne mollis (family Linophrynidae) has been examined by light and electron microscopy. The light gland has a central cavity, with diverging branched ducts which ramify into numerous tightly-packed radial tubules. In the two largest specimens all glandular lumina contain symbiotic bacteria. Except for a thin-walled part of the typical radiating tubules, the epithelial walls of the light gland are of a uniform structure, consisting of flattened basal cells, situated next to the basal lamina, and tall cells extending to the lumen.

In the smallest specimen examined the various parts of the light gland were not fully differentiated and only a very few symbiotic bacteria were present; its glandular epithelium differed from that of the two larger specimens by containing many goblet cells, the secretion of which may be important for the initial establishment of the right strain of symbiotic bacteria

Observations on the luminescence of live specimens have shown that the light emission can be rapidly modulated from within the esca. The in vivo flash kinetics are considerably slower than those of Dolopichthys longicornis, but similar to those of both the caruncle exudate of Ceratias holboelli and in vitro anglerfish bacterial luciferase.

The BBC Voices website will probably already be familiar to those involved in English Language teaching and research. Along with local and national radio programmes about English that were broadcast in the UK in 2005, this site is one of the outputs of Voices, a large collaborative multi-platform project undertaken by the BBC and the University of Leeds in 2004 and 2005. Members of the public were asked to submit to the site the different words they use for a range of concepts, and to air their views on English and language use around the UK. In parallel, regional radio journalists who had been trained by Leeds linguists conducted over 300 sociolinguistic interviews with small groups of speakers, discussing the same set of concepts as the online questionnaire, and similarly eliciting opinions on English and language use.

The dynamic aspect of early life growth is not fully captured by typical analyses, which focus on one specific time period. To better understand how infant and young child growth relate to the development of adult body composition, the authors characterized body mass index (BMI) trajectories using latent class growth analysis (LCGA) and evaluated their association with adult body composition. Data are from the Cebu Longitudinal Health and Nutrition Survey, which followed a birth cohort to age 22 years (n = 1749). In both males and females, LCGA identified seven subgroups of respondents with similar BMI trajectories from 0 to 24 months (assessed with bimonthly anthropometrics). Trajectory groups were compared with conventional approaches: (1) accelerated growth between two time points (0–4 months), (2) continuous BMI gain between two points (0–4 months and 0–24 months) and (3) BMI measured at one time point (24 months) as predictors of young adult body composition measures. The seven trajectory groups were distinguished by age-specific differences in tempo and timing of BMI gain in infancy. Infant BMI trajectories were better than accelerated BMI gain between 0 and 4 months at predicting young adult body composition. After controlling for BMI at age 2 years, infant BMI trajectories still explained variation in adult body composition. Using unique longitudinal data and methods, we find that distinct infant BMI trajectories have long-term implications for the development of body composition.

We investigate homogeneous incompressible turbulence subjected to a range of degrees of stratification. Our basic method is pseudospectral direct numerical simulations at a resolution of . Such resolution is sufficient to reveal inertial power-law ranges for suitably comprised horizontal and vertical spectra, which are designated as the wave and vortex mode (the Craya–Herring representation). We study mainly turbulence that is produced from randomly large-scale forcing via an Ornstein–Uhlenbeck process applied isotropically to the horizontal velocity field. In general, both the wave and vortex spectra are consistent with a Kolmogorov-like range at sufficiently large . At large scales, and for sufficiently strong stratification, the wave spectrum is a steeper , while that for the vortex component is consistent with . Here is the horizontally gathered wavenumber. In contrast to the horizontal wavenumber spectra, the vertical wavenumber spectra show very different features. For those spectra, a clear dependence for small scales is observed while the large scales show rather flat spectra. By modelling the horizontal layering of vorticity, we attempt to explain the flat spectra. These spectra are linked to two-point structure functions of the velocity correlations in the horizontal and vertical directions. We can observe the power-law transition also in certain of the two-point structure functions.

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

Early in his tenure in office, Zulfikar Ali Bhutto announced that his agrarian reforms would affect the lives of the common people of Pakistan more than any other measure contemplated by his avowedly socialist and populist regime. Almost seven years later, the martial law regime of Zia-ul-Haq issued a White Paper on the performance of Bhutto's government (which Zia ended with a coup in July of 1977), charging that the land reforms were in practice yet another example of that Government's cynical posturing, sinister manipulation, favoritism and victimization, corruption and abuse of power. The irony is that a centerpiece of Bhutto's program for the “salvation” of Pakistan should appear in a White Paper which attempted to add legitimacy to the execution of the popular ex-Prime Minister. A further irony is that Bhutto himself came from a background which could only be called “feudal” in the terms of Pakistani political discourse, and surrounded himself politically with scions of similar families. What was meant by Bhutto's pledge to eradicate feudalism via land reform and what are we to make of it?

The luminescent material emitted from the post-cleithral organ of searsid fishes is in the form of granule-packed cells. From this material a partially purified extract may be prepared which shows some of the properties to be expected from a photoprotein. The purified material luminesces on treatment with hydrogen peroxide and, specifically, ferrous iron. The properties of the luminescent system appear similar to those of material isolated from the luminous polychaete Chaetopterus.

Sequences of the 16S ribosomal RNA gene of luminous bacterial symbionts from the escas of the deep sea anglerfishes Melanocetus johnsoni and Cryptopsaras couesi were determined by direct sequencing of polymerase chain reaction products. A sequence was also obtained from a strain of Photobacterium phosphoreum, the culturable light organ symbiont of Opisthoproctus grimaldii. Comparison of these and other published sequences showed that the anglerfish symbionts group with the marine luminous bacteria but are not closely related to P. phosphoreum. The two ceratioid symbionts differ from each other at least at the species level.

Luminescence in decapod crustaceans may be of two kinds. Either a secretion is ejected into the surrounding water as a luminous cloud, or specific light organs, which may be internal or superficial, glow steadily (Balss, 1944). There may be more than 150 photophores in some species of decapod, and the number, position and development of these organs in Systellaspis debilis and species of Sergia have been described by Coutière (1906), Kemp (1910a), Terao (1917) and Gordon (1935). The production of luminous clouds has been observed in the Oplophoridae, Pandalidae and Thalassocarididae of the Caridea, and in the Penaeidae of the Penaeidea (Table 1). Observations of the luminescence of specific light organs or tissues are much less numerous. Luminescence has been observed among the Oplophoridae from the photophores of species of Systellaspis and Oplophorus and from the liver of Hymenodora. The hepatic organs of Parapandalus of the Pandalidae have been seen to luminesce, and among the Penaeidea both the hepatic organs of Pesta of Sergestes and the superficial organs of Sergia have been seen to emit light (for references see Table 1). Undoubted hepatic light organs also occur in Chlorotocoides and Thalassocaris of the Thalassocarididae, and superficial organs in Hymenopenaeus debilis of the Penaeidae. Additional organs of doubtful function which have been described as possible photophores occur on the chelae of the homolid crab Hypsophrys, in the branchial chamber of Sergestes, the pleopods of Parapandalus and the uropods of Acetes (Table 2). There are unconfirmed reports of luminescence in the eye of Pasiphaea etarda (Kiernik, 1908) and in Polycheles (Alcock, 1902) and Leptochela (Chace, 1940), neither of the latter two cases being ascribed to a particular organ, though ‘a greasy glandular patch’ near the oviduct was implicated in Polycheles.

A simple data acquisition and control system has been developed for the measurement of the spectral emission from bioluminescent animals. A programmable calculator system is used to control a monochromator and to measure, record and graphically display the results. Results from calibration sources and three animals are described with comments on the success of the technique.

Research ships are much more numerous on the high seas in the 1990s than they were in the 1950s. At that time the United Kingdom was fortunate in that it had a purpose-built research vessel, RRS 'Discovery II' (see inside back cover), the successor to Scott's 'Discovery' (which was itself granted the title Royal Research Ship in 1923, see inside front cover). 'Discovery II's prime objectives had originally been oceanographic research in the Antarctic relevant to the whaling industry, to which end she had completed six two-year Antarctic commissions. In the 1950s she was being operated by the National Institute of Oceanography and was working extensively in the North Atlantic, covering the gamut of marine physics, chemistry, biology and geology, including participation in the research programme of the International Geophysical Year. However, by 1959 she was 30 years old, and both scientific space and stability had become limiting. Increasingly stringent Ministry of Trade requirements were also making successive refits less and less cost-effective. In April of that year the first brief outline for a replacement vessel was prepared, and six months later discussions between naval architects and the National Oceanographic Council (represented by Dr H.F.P. Herdman) produced an outline draft specification for the new ship. Further discussions with the Admiralty finally resulted, in June 1961, in an order being placed for a new vessel, at an estimated cost of £800K (Deacon, 1967).

The new ship, the RRS 'Discovery', was launched in July 1962 and commissioned on 17 December, 10 m shorter than her originally conceived length but at a contained final cost of £802K.

The anatomy of the eyes of several species of mesopelagic decapods (family Oplophoridae), obtained from the eastern north Atlantic, is described and related to the unique light environment of the deep seas. The oplophorid eyes are of the reflecting superposition type, but they show a number of regional morphological variations. The main rhabdom, formed by retinula cells Rl to R7, comes in a variety of shapes, from fusiform rhabdoms in the dorsal region of the eyes of Oplophorus spinosus to multi-lobed interdigitating rhabdoms in deepwater species. The distal rhabdom, contributed to each ommatidium by retinula cell R8, gradually increases in size towards the ventral part of the eye in Systellaspis debilis and O. spinosus. Histological examination of the tapetum shows that it is incomplete dorsally in some species from the upper mesopelagic zone (S. debilis, O. spinosus), and that the amount of reflecting pigment in the tapetal cells increases in the ventral part of the eye. The tapetum is complete in some deep-water species (Systellaspis cristata, Acanthephyra kingsleyi, A. pelagica). These adaptations of the rhabdoms and tapeta are thought to be concerned with increased sensitivity to the dim up-welling irradiance and to bioluminescence. A dorsal accessory compound eye consisting of a small group of apparently functional apposition-type ommatidia is described.

Coelenterazine chemiluminescence is now established as the most common chemistry responsible for bioluminescence in the sea, being found in seven phyla. However, the organisms which synthesize coelenterazine have yet to be identified. In order to deter-mine whether the luminous midwater shrimp Systellaspis debilis (A. Milne Edwards) (Arthropoda: Decapoda) is capable of luciferin biosynthesis, a developmental series of eggs was assayed for its luciferin, coelenterazine. The advantages of this system are that S. debilis eggs are autonomous and therefore have no external nutrient supply, the embryos can be ranked for developmental stage and the large egg size allows clutch numbers to be determined accurately. Recombinant apo-aequorin, which requires coelenterazine for luminescence, was used to quantify coelenterazine during the developmental sequence. An increase of almost two orders of magnitude was detected in coelenterazine content per egg between the first and final stage of development (mean values of 1 pmol and 71 pmol). This demonstrates de novo biosynthesis of coelenterazine for the first time.

The escal light glands of some deep sea anglerfishes of the genus Melanocetus were examined by light and electron microscopy. Sections of a larval Melanocetus sp. showed that the gland originates from a solid, branched ingrowth of epidermal cells from the distal surface of the bulb-shaped esca.

The light gland of metamorphosed specimens of M. murrayi and M. johnsoni was found to be constructed in the same way as that of most other ceratioids, i.e. as a branched tubular gland enclosed by a cup-shaped reflector; the radial tubules of the gland open into a central escal cavity, from which a duct leads to an epithelium-lined space, the vestibule, lying above the gland. A duct from the vestibule opens on the upper-caudal surface of the esca.

In the smaller of two specimens of M. murrayi, the epithelium lining the escal cavity and the glandular tubules is of a uniform thickness and structure, consisting of flattened basal cells, cells extending to the lumen, and goblet cells. No bacteria were found anywhere within the esca. The reflector enclosing the gland contains only a few scattered crystals.

In the larger specimen of M. murrayi the distal (terminal) portions of the glandular tubules have tall epithelial cells, while their wide proximal parts and the central escal cavity are lined with a flattened epithelium; goblet cells are absent. Many glandular cells have processes projecting into the lumina. All glandular lumina and the central escal cavity contain numerous rod-shaped bacteria and apparently isolated anucleate cytoplasmic profiles. The reflector is thick and well-developed; each cell contains several staggered layers of crystals.

The hepatic photophores of species of Sergestes (organs of Pesta) contain fluorescent paracrystalline platelets which are the sources of the luminescence. The cells containing these crystals are contiguous with cells filled with lipid droplets which act as a diffuse reflector. The optical properties of the organ as a whole derive from the different arrangement of the various regions in the mosaic of individual tubules. The hepatic photophores of Parapandalus, Thalassocaris and Chlorotocoides have a similar anatomical position but differ considerably in structure. They do not contain paracrystalline material and they have a diffuse reflector, probably not composed of lipid, which is separated from the tubules that make up the photocytes. The organs in Thalassocaris and Chlorotocoides are very similar in structure. Luminescence in the photophores of all four genera is probably intracellular.

Many marine animals that live at depths greater than about 500 m are deeply coloured (generally red, brown, black or purple) even though there is little or no down-welling light in these regions (Clarke & Denton, 1962). The nature and function of many of these pigments are obscure. Partly, no doubt, because of the difficulty of provenance, there have been very few chemical and biochemical investigations on such pigments (see Crozier (1974) for a review of pigments in fishes). We report here an investigation of the pigments of meso- and bathypelagic medusae. The work was initiated following preliminary identification of protoporphyrin in Atolla wyvillei and Periphylla periphylla (Herring 1972): the present work confirms and considerably extends these observations (Head, 1976, M.Phil. Thesis, University of London).