THe MIcROSCOPE. 213 
THE ORIGIN OF RENAL CALCULI. 
NOTICED the following peculiarity in a case recently under 
my care. In examininga drop of the urine there were to be 
seen in many parts of the field small collections, from three to 
seven, of red blood corpuscles seemingly surrounded by a 
fibrinous mass. On these masses were deposited a myriad of 
minute acicular crystals. Changing the ocular for a number 
six, and using the very outside of the angle, 160° +, I was able 
to find individual red blood corpuscles, on whose surface crystals 
of uric acid were being rapidly deposited. The bearing of this 
on Ultzman’s theory of the origin of renal calculi is plain. 
B. 
Tue September numbers of the Journal of Microscopy and 
The Microscope are at hand. The former alludes editorially to 
the Rochester meeting of the American Society, and says it is 
to be hoped that the general run of papers read and proceed- 
ings had on that occasion will not be taken as representative of 
American microscopical science. The journal gets its report of 
what was done from the garbled extracts of a daily paper— 
showing how much interest Professor Hitchcock really takes in 
the American society. He is good enough, however, to remark 
that the society has his best wishes—for which the society no 
doubt feels deeply grateful. Professor Stowell’s journal, The 
Microscope, on the contrary, contains little else than extracts 
from the proceedings of the society, the reason therefor being 
one in which all who have the pleasure of knowing the profes- 
sor and his talented wife will deeply sympathize—viz., the 
severe illness of the latter at Philadelphia. Mrs. Stowell, be- 
sides being a most accomplished manipulator of the microscope, 
drawing with facility with pen and pencil, is a lady of rare so- 
cial endowments, and it is to be hoped that her illness will not 
be followed by any permanent evil effects.— Vational Druggist. 
fO@F- Puease Renew your Supscrrerion For 1885. 
