MUSCULAR TISSUE. 



241 



Neosine, C 6 H 17 N0 2 . 



Novaine, C 7 H 17 N0 2 . 



Ignotine, CgH^N^Og. 



Phosphocarnic acid, C 10 H 17 N 3 5 or C 10 H 15 N 3 5 . 



Inosinic acid, (HO) 2 -PO-0-CH 2 (CHOH) 3 -CH: (C 5 H 3 N 4 0). 



The following extractives as a group are called purine bodies. 

 Their formulas, together with that of purine from which they are 

 derived and the hypothetical " purine nucleus " follow : 



URIC ACID, C 5 H 4 N 4 O 3 . 



2-6-8-trio.vy purine. 



ADENINE, C 5 H 5 

 6-aminopurine. 



HN-CO 

 H 9 N-C C- 



NH 



ii i > 



N-C-N 



GUANINE, C 5 H 5 N 5 O. 



2-amino-6-oxy purine. 



CH 



EXPERIMENTS ON MUSCULAR TISSUE. 



I. Experiments on " Living " Muscle. 



i. Preparation of Muscle Plasma (Halliburton). Wash out 

 the blood vessels of a freshly killed rabbit with 0.9 per cent sodium 



