347 



auf dessen Rat ich diese Mitteilung veröffentliche, kontrolliert. Es war 

 das normale. 



Abgesprengte Bündel in der Haut der Brust und der Schulter 

 wurden auf keiner der beiden Seiten der Leiche gefunden. Im großen 

 und ganzen verhielten sich die Muskeln beider Seiten, wie die neben- 

 stehenden Figuren zeigen, gleich. Der linke Muskel war vielleicht noch 

 etwas stärker reduziert als der rechte. 



Würzburg, 20. Januar 1905. 



Nachdruck verboten. 



Cytological Changes in the Kidney due to Distilled Water and 

 varying Strengths of Salt Solution. 



By Dr. Ferdinand Schmitter, 

 Instructor in Anatomy at the University of Wisconsin, Madison, Wis. 



With 5 Figures. 

 In studying sections of pathological kidney tissue I found a variety 

 of structural appearances the significance of which it was desirable to 

 know. As most of the specimens were from autopsies which were 

 made from a few hours to a few days after death, there was a 

 question as to what part post-mortem changes took in their causation. 

 I conceived the idea that maceration might be a factor in their pro- 

 duction because here more than in any other gland the tissues 

 are exposed to a fluid which when pathological might have maceration 

 effects. Since urine is so variable in its concentration especially in 

 pathological conditions, we might well expect that it would produce 

 endosmotic or exosmotic effects on the cells, according to the degree 

 of concentration. With this in view I have macerated pieces of the 

 kidney of a young cat for various periods of time in distilled water 

 and different strengths of salt solution. The effect of the maceration 

 is to produce several cytological phenomena of interest. Maceration 

 for about one hour is in general the most satisfactory length of time. 

 Those treated for a briefer period do not show the full effect, while 

 very long periods destroy the effect by more or less disintegration. 

 For this study it is necessary to use young cats because the fat in 

 the kidneys of old cats interferes with delicate cytological study. In 

 the convoluted tubules of a normal kidney of a cat, there is no con- 

 stant cytoplasmatic structure. The epithehum may be high or low, 

 the diameter of the lumen varying inversely to the height of the 



