202 THE AMERICAN MONTHLY [Nov 



lenses which will act upon the invisible rays in a manner 

 the same as glass acts upon luminous rays. If I achieve 

 succesB in this field I shall expect to obtain photographs 

 of the interior of the body, and photomicrographs of 

 interior tissues of the living body. — Elmer Gates. 



Curious Leucocytes. 



BY EPHRAIM CUTTER, M. I)., NEW YORK. 

 (Tolles' l-16th inch 180° objective, two inch ocular and 

 B. stand, ten inch tube were used with the direct light of 

 a small oil lamp, condensed direct witb an one inch ocular.) 

 Mar. 16 — A middle-aged man nervously complained of his 

 tongue being over sensitive. It looked like an average 

 tongue and the case was deemed to be neurasthenic. This 

 opinion was sustained by the morphology of the urine 

 presenting protoplasmic and filamentous catarrh, slight 

 albumen, kidney casts and fatty epithelia. These were not 

 continously nor largely nor contemporaneously present 

 but were disclosed at different times of examining the 

 urine for about 20 successive days. The morphology of 

 the saliva on top of the tongue showed the ordinary but 

 overgrown papilla) distended with bacteria; epithelia in- 

 vaded with spores ; giant mucous corpuscles distended 

 with granular but motionless contents, some with two or 

 three nuclei. The ordinary automobile movements were 

 ^not visible within. But curiously enough they were 

 found in full activity within the leucocytes of the blood 

 of the same case! The outlines and swarming changes 

 of place of the introspores were optically identical with 

 those found in the oral mucous corpuscles ! There were 

 four or five of them, some with two nuclei and one with 

 three. Some had amoeboid movements. March 17, the 

 oral mucous corpuscles were found with motionless con- 

 tents. Also from active automobile swarming contents 

 of leucocytes. On March 29th, the spores in the oral 



