' 138 TRANSACTIONS OF THE 
6. The uncorrected data indicate the same, except that 
for protein a positive correlation exists between protein 
consumption and the coefficients of digestion of this nu- 
trient. 
7. High protein consumption results in high urine 
output and in high excretion of total and urea nitrogen in 
the urine. Creatinin is excreted in practically constant 
quantities irrespective of the protein intake. Ammonia and 
creatin nitrogen are present in smallest amounts and bear 
no constant relation to protein ingestion. 
8. Expressed on a percentage basis, urea nitrogen 
makes up a higher proportion and creatinin nitrogen a rel- 
atively lower percentage of the total nitrogen of the urine 
of lambs fed a high protein ration than is the case with lambs 
on a low protein intake. 
9. A slight positive correlation exists between protein 
consumption and nitrogen retention by growing lambs. The 
same is true for nitrogen absorption (corrected data) and 
nitrogen retention. 
10. The methods used in this investigation failed to 
show any influence of the amount of protein consumed 
upon the nitrogenous composition of the flesh and blood of 
growing lambs. The only chemical effect observed which 
followed differences in protein intake is the storage of fat 
in the boneless meat. This seems to be favored by high pro- 
tein consumption. 
