When I was requested to read a paper here, my surprise and my pleasure were great; but knowing as I do the wide scope, as well as the high value of the work of this Association, I questioned if there could be any subject left over that had not already been considered. Under these circumstances I judged it best to give a simple utterance to what is of present interest to myself. I am happy in the conviction that, wherein I am found to fail, the deficiency will be supplied by the discussion that is to follow.