272 
PHYSIOLOGICAL PATHOLOGY. 
casts and micrococci; they also died after a few days with the 
same vesical and renal lesions. 
In the dog, whose concentrated and acid urine seems, a priori, 
to he a very bad medium of culture, the introduction into the 
urethra of a few drops of pure culture of micrococci, followed 
by the ligature of the prepuce for a few hours, also gave rise to 
cystitis and nephritis. 
In several male dogs inoculated in the same manner, and fed 
on meat, and in a number of females, which, after perineal sec¬ 
tion on the dogs, had been accidentally contaminated by the use 
of an uncleaned cathether, lesions less serious were found and 
death was less common, but still, however, with the presence of 
granular casts and micrococci in the urine, which always re¬ 
mained acid (or at least neutral). At the post-mortem of some of 
these the vesical mucous membrane was found to be red, and the 
kidneys, which were often pale in color, also contained micrococci. 
These results seem to prove that when introduced into a 
healthy urinary apparatus the micrococcus urinse will develop 
itself even when the urine is acid, and gives rise to vesical and 
renal lesions, likely to be followed by death—conditions which, 
doubtless, are not without similar results in human pathology. 
(Academie des Sciences.) 
INFLUENCE OF ARTIFICIAL LIGHT UPON THE VEGETATIVE 
PROPERTIES OF THE BACILLUS ANTHRACIS. 
By S. Akloing. 
The conclusions resulting from the experiments made are as 
follows: 1st. If vegetability means the power that belongs to 
the sporulated mycelium, or the free spores, to produce a new 
mycelium, it is observed that this power is rapidly lost in freshly 
sowed bouillons by the rays of a July sun. An exposure of two 
hours, with a heat of -j- 35° and -(- 39°, produces this result. 
2d. When the solar influence has lasted for two hours, the vege¬ 
tability is only interrupted for a certain time. 3d. If we would 
discover which of the rays of solar light possess such an influence 
