page 388 note 1 Here the second name is given incorrectly as Palmiro, and the date of death as February 8.

page 389 note 1 In Bull. Soc. Franç. Min., 1928, vol. 51, p. 340, the date of death is given incorrectly as April 28, 1928; and in Poggendorff's “Biographiseh-literarisehes Handwörterbuch”, 1902, vol. 4, p. 193, the year of birth as 1860.

page 393 note 1 The above portrait showing Groth in his prime is reproduced from a photo graph purchased by the writer in München in 1893, when a student under Groth. In those days photographs of professors were almost as popular as those of actresses, and both sorts were displayed together in many of the shop-windows.

page 393 note 2 Grothine, of F. Zambonini, 1913, is another ill-defined mineral named after Groth. Distinguished mineralogists have been rather unfortunate in the minerals that have been named after them; and also, it may be said, they have often erred with the minerals that they have themselves described as new.

page 395 note 1 Robert Henson [1814-1864] started as an assistant to James Tennant [1808-1881].

page 396 note 1 The various equivalent forms were used following the language (Croatian, Serbian, Slovene, Hungarian, or German) in which his published papers were written.

page 397 note 1 The year of birth has been in some places erroneously given as 1846.

page 405 note 1 The name has sometimes been written Schönflies, and incorrectly as Schönfliess, but he himself always used the form Schoenflies.