1888-89.] Paton and Stockman on Metabolism of Man. 127 
It will be observed that on some occasions the loss of flesh, as 
calculated from the urea, is greater than the total loss of weight. 
This is to be explained by the fact that Jacques was by no means 
regular in the hours at which he emptied liis bladder, so that the 
weighing of one day is with a full bladder, on another with the 
viscus empty. 
During the thirty days he lost 10-316 grms. or *166 kilos, per 
kilo, of his original weight ; in all about J of his original weight. 
On an average he lost *34 kilos, per diem. 
During the first five days of the fast the urea excretion was high 
and irregular — a fact which has been so frequently observed in 
starving animals, but which was not manifested in Cetti’s case. 
Dividing the fast up into six periods of five days, we see the 
gradual fall in the daily excretion of urea till the very low figure of 
7*3 grms. per diem is reached. 
Table la . — Urea Excretion in Grms., Average per Diem during 
Six Periods of Five Days. 
I. 257 | IV. 9-3 
II. 11-6 V. 9'2 
III. 10-9 I VI. 7-3 
On account of his irregular habits in regard to the emptying of 
his bladder, whereby the night urine is sometimes counted with the 
past day, sometimes with the succeeding day, the urea excretion 
manifests on one or two occasions somewhat large variations. 
Table II. gives a general summary of the results worked out for 
six periods of five days each. 
The results for Period I. are not given, because our observations 
during this period were incomplete. 
It will be observed that in Periods II., III., IV., V., and YI. 
there is a slow and steady fall in the flesh waste. On the other 
hand, the loss of non-nitrogenous matter is by no means so con- 
stant, its relationship to the flesh waste being in Periods III., IV., 
and VI. as about -6 to 1, while in Periods II. and V the pro- 
portion is very much raised. That this is not due to a retention of 
water during the former three periods is indicated by column 8 of 
the table. Period III. may, perhaps, be accounted for by this, but 
in the other periods the proportion between the fluid taken and the 
fluid excreted by the urine remains constant. Of course, it is 
