892 _ General Notes. [ August, í. : 
tions, seemed to have their nitrogenous tissues replaced by a fatty 
substance, adipocere. In phosphorous poisoning the nitrogenous _ 
tissues, particularly the liver, undergo a fatty degeneration. Itis _ 
usually taught that the fat arises in these cases from the decom- 
position of tissue proteid, but Lebedeff seeks to prove thatthe 
fat found in the “ degenerated ” organs has made its way to them 
from the surrounding connective tissue, out of which it has been 
dissolved, to be again laid down ina less soluble combination, 
The disappearance of the proteid matter is due to an independent — 
disintegration. The fat of the milk is not made by the proto- | 
plasm of the mammary gland cells, but comes ready formed to 
them from the blood. The view of nutrition, according to which 
proteid food by its physiological decomposition gives rise to fat 
in the body, has little experimental support. 
Tue Formation of Mirx.— Schmidt-Mihlheim denies the — 
truth of the view that the formation of part of the milk obtained q 
from a cow begins only with the process of milking, and that the a 
udder is too small to accommodate all the fluid which may be 7 
obtained at one milking. The secretion as it is produced in the . 
gland cells of the udder is forced gradually into the milk recep- 
tacles, but leaves much of its fat clinging to the walls of the 2: 
gland ducts whence it is gradually washed off during the process . 
of milking, hence the milk which is last drawn is richest in pe i 
there is no evidence, however, that the chemical propo 
the fluid vary with different periods of secretion. Even alter 
most thorough milking, some fluid still remains in the milk ~ : 
whence it is driven into the milk reservoirs by the newly for shee 
secretion pushing from behind, and may then be obtained a ae 
the lapse of an hour. | 
_ INTERACTION oF THE SpinaL Nerve Roorts.— Mr. Ka : 
lays bare the spinal cord of a frog and divides all the nen : 
upon one side except a single pair. He then lays the antemi 
or motor root of this pair upon electrodes, and finds the stre me 
of the electrical current, which is just too feeble to excite a pe pair 
lar contraction. He then cuts the sensory root of the ae 5 
and finds that the induction current now causes strong CO po 
tions when applied to the anterior root. It seems from, ‘bility do 
as if cutting the posterior root had increased the irritaDly” 
the motor branch. fi 
CHEMICAL DIFFERENCE or Livinc AND DEAD Mr - 
Loew concludes, as the result of a long series of exper 
capable of reducing silver salts, and therefore that the me . 
forms a part. 
NUTRITION OF THE Froc’s HEART.—* 
vascular frog heart two groups of muscular fibers W 
* In the not 
ith different 
