CoRiAT, CJionistry of the ?■«'€} vous System. 149 



final. It is partly adopted from Thudichum and Koch and partly 

 the result of my own observations. 



A. Water. 



B. Proteids. 



1. A globulin coagulating at |7° — 50° C. 



2. A globulin coagulating at 70° C. 



3. Xeuroglobulin, coagulating at 45° — 50° C. (According to Halli- 



BrRTON it is the coagulation of this substance in the nerve cells, 

 which is the physico-chemical cause of death from hyperpyrexia). 



4. Neurostromin (in traces). 



5. Nucleo-proteid (Levexe, Halliburton, Schkarin). 



6. Neurokeratin (KtJHNE and CHITTENDEN). 



7. Albumoses and Peptones. 



C. Extractives. 



1. The purin bases of the nucleo-proteids (Adenin, guanin, hypo- 



xanthin) . 



2. Pyramidin bases (thymin and cytosin). 



3. Amido-acids (leucin and tyrosin). 



4. Urea (also a normal constituent of the cerebro-spinal fluid). 



D. Carbohydrates. 



1. Inosite. 



2. An unknown carbohydrate which gives the furfurol reaction and is 



probably related to the pentoses. 



3. Galactose (a split-product of cerebrin). 



4. Dextrose (in the cerebro-spinal fluid) — CoRlAT. 



5. Pyrocatechin (in the cerebro-spinal fluid Pj—Hallburton. 



6. Glycogen (?), 



E. Acids. 



1. Nucleic acid. 



2. .Sarcolactic acid. 



3. Lactic acid (optically inactive ethylidene lactic acid. This is the 



result both of post-mortem decomposition and of long continued 

 activity in the central nervous system, as in convulsive seizures. 

 In both cases, the acid passes into the cerebro-spinal fluid). 



4. Glycerophosphoric acid (a decomposition product of lecithin). 



5. Formic acid. 



6. Acetic acid. 



7. Succinic acid. 



8. Stearic, oleic acid, palmitic acids (decomposition products of lecithin). 



9. Litho- and Butophosphoric acid (Thudichum). 



F. In Pathological Conditions. 



1. Cholin (a decomposition product of lecithin — Mott and Hallibur- 



ton, Donath, Wilson, Coriat). 



2. Neurin. 



3. Uric acid. 



4. Kreatin. 



5. Trimethylamin (a post-mortem product). 



