478 ANALYSIS OF CONTINENTAL JOURNALS. 
In the further course of this experiment, in the first ten 
days the same dog received the casein and distilled water 
without the addition of salt; the twelve following days it 
received the same amount of caseine and distilled water 
daily, to which common salt was added, in increasing doses 
from 0 100 gr. to 0200 gr. daily; finally, during a further 
period of twelve days the dog received the same quantity of 
caseine and distilled water daily without salt. The dog took 
in the caseine, in the first ten days, 8-363 gr. phosphate of 
lime, during the twelve following days 10-381 gr., and during 
the last 10 843 gr. 
The ten days the dog lost per rectum 8‘445 gr., and by 
the urine 0'536 gr. phosphate of lime ; the twelve following 
days, under the influence of salt, the loss was per rectum 
7’925 gr., by the urine 0-420 gr. ; and in the last twelve days 
he lost per rectum 10 726 gr., and by the urine 0-119 gr. 
Consequently, in the ten days during which the animal did 
not receive any salt in the aliment it lost per rectum 0-082 
gr. more phosphate of lime than was received in the ali- 
ments, and in the urine and by rectum together 0 - 6l8 gr. more; 
during the following twelve days, under the influence of the 
salt, the loss per rectum was 2*456 gr. less than received in 
the aliment, and by the urine and rectum together 2 036gr. ; 
and during the last twelve days, that is, under the complete 
absence of salt in the aliments, the loss was only, per rec- 
tum, 0*1 17 gr. less than received, and by the urine and rectum 
together only 0-002 gr. of phosphate of lime. 
The experiments described, as well as several others per- 
formed in the same way, show that the phosphate of lime 
introduced into the stomach with the caseine is absorbed by 
the organism in a larger quantity without salt than in case 
where the aliments contain salt. 
To ascertain whether the quantity of phosphate of lime 
varied in the blood during the investigation, the follow- 
ing experiment was made : — The blood of a dog, which 
during the space of eighteen days had taken nothing except 
caseine and distilled water, gave 0 034 per 100 of lime ; 
the blood of the same dog, after having been kept for 
eighteen days on caseine and distilled water, with the addi- 
tion of 0*500 gr. of salt daily, gave 0 057 of lime. 
It is thus shown that the quantity of lime in the blood 
increases under the influence of the salt. 
From these results the natural question is — Does the pre- 
sence of common salt increase the amount of lime in the 
bones? To resolve this question a series of experiments 
were undertaken, the results of which w ere as follow s : 
