SECT. 9] PROTEIN METABOLISM 1091 



of LeBreton & Schaeffer, on the one hand, and Murray, on the 

 other, is that the former excluded the membranes in their estimations 

 while the latter probably included them. We therefore have a way 



Table 141. 



Uric acid milligrams per embryo 



< — — ^ ^ ^ 



Tomita & 

 Needham Fridericia Fiske & Boyden Kamei Targonski Takahashi 



" l^g^ 'll I ^ Jl s „ I 



2 S S 2 era . i « j; "" Ji 'c -%-, E 



e-S.s li^s-""? 



Day i5+£8l? <^ag ^£b " ^fe8 ^^8 l+SBfel 



o 



0-503 



9 



0-969 — — — — — 



9-10 I -301 — — — — — 



10 1-873 — 4-33 — 2-o6 — 

 1-344 _____ 



11 3-410 3-5 7-1 _ _ _ 

 3-733 _____ 

 1-917 _____ 



12 4-276 5-2 10-61 — 3-51 — 

 4-077 _____ 



13 5-314 5-5 15-06 _ _ _ 

 6-330 _____ 



14 6-930 11-7 _ 0-507 4-75 0-55 



15 10-760 18-6 — — — — 



9-920 — — — — — 



16 1 3*650 28-8 — — 9-30 — 



17 13-940 42-8 — 3-u — 3-50 



17-18 17-640 _ _ _ 13. y^ _ 



18 — 49-7 _ _ _ _ 



19 - - _ _ _ 7.50 



19-5 26-090 57-4 lOO-O — — — 



20 32-700 — — — — — 

 25-600 64-8 — — — — 



of determining what part the membranes are playing in the protein 

 metabolism. These relations are shown in the form of a graph in 

 Fig. 327. The newly calculated ratio does not quite become a con- 

 stant during the last 10 days of incubation, although it approximates 



