14 THE MICROSCOPE. 



ject. I may be "optically deluded," yet whether so or not I think 

 there is something in this description of the case worthy the consid- 

 eration of the pathological scientist. May it not point in a direc- 

 tion to find a key for the differentiation of the red corpuscle thus 

 far unknown. It suggests to me that said key may be in the chem- 

 icals used in coloring, flavoring and even manufacturing certain so- 

 called whiskies, but then the question arises, will they produce the 

 same results in corpuscles treated after taken from the human body? 

 In this case they had supposed the child dead for eight to ten hours; 

 but I stop speculating, simply wishing to describe, leaving specula- 

 tion and experiments for abler parties. My drawings show figures 

 (and remarks) not called for by your letter, yet prefer to send it 

 just as it was prepared for my own use among my non-professional 

 friends (like myself) and some few medics who really know less of 

 blood and some other thing under the microscope than unprofes- 

 sional "Gra)' Beard." Figs, i, 2, and 3 are my ideas as to correct re- 

 sults in manipulation, when viewing corpuscles. This may aid you in 

 forming an idea of how far to trust my sight, or how much to place to 

 the account of "optically deluded." I have frequently been unable to 

 get fine results from lenses which bear the name of first-class, (among 

 which I'm sorry to class a }'h horn. 1-32 numerical ap), and was just 

 beginning to think that untaught homespun manipulation would 

 never be able to master a modern wide angle objective, but a i-io 

 by Tolles, with hom. im. fluid has taught me that even homespun 

 manipulation can do something with some lenses, for this 

 i-io is one of the most easily managed of any I've 

 handled. No trouble whatever to bring bal. am. pel. out 

 equal to photograph made under Tolles direction, giving its best 

 results. This, too, by either day or lamp light. Recently having 

 a spare day in New Orleans, spent it beween Dr. Schmidt, of Char- 

 ity Hospital, Dr. Smythe, and Dr. G. Denson. Long before appear- 

 ance of Dr. B.'s paper I was very decided in my opinion that high 

 grade lenses, even if hom. should be adjustable and while with Dr. 

 Denson, for the first time, had a chance to settle the matter prac- 

 tically to my own -mind by comparing with another. Whether 

 using Zeiss' }i adj. water im. Tolles -^^ hom. or other lenses 

 for best results, invariably I had to adjust from 17^ to 3 points, 

 nearer closed, than Dr. I). Had my y& been adjustable, I 

 think it would have given me good results, for it bore 



