394 



Profs. A. Gamgee and W. Jones. 



[Feb. 9, 



power that fairly satisfactory polarimetric observations could be 

 made in solutions of great dilution. The substance is dextrorotatory. 

 The following data were obtained : — 



Weight of substance * 200 gramme. 



Volume of solution 25 c.c. 



Observed angle (mean of eight readings) ... 0° 47' 



Length of tube 100 mm. 



[o]d- = +97°-9. 



On the Nucleohiston of the Thymus Gland. 



It would seem quite easy to obtain this substance in any desired 

 quantity by following the v T ery simple method which Lilienfeld 

 described in twenty lines.* 



This method leads, however, to a product whose solutions are highly 

 opalescent, and an optical examination could not be thought of. The 

 cloudiness is so persistent, that for a long time we were inclined to 

 believe it to be a property inherent in the substance. We finally suc- 

 ceeded, however, in obtaining solutions almost as colourless and 

 transparent as distilled water. It is only necessary to extract Lilien- 

 feld's preparation with a 5 per cent, solution of ammonium acetate 

 and filter. The fluid filters very slowly, but perfectly clear and con- 

 tinuously. The solution was poured into 95 per cent, alcohol, and 

 the precipitated proteid washed and dried with alcohol and ether, as 

 described in connection with other preparations mentioned in this 

 paper. The substance thus obtained was submitted to polarimetric 

 examination, the solution being made with the aid of very dilute 

 ammonia. The following data were obtained : — 



Weight of substance 2*023 gramme 



Volume of solution 50 c.c. 



Observed angle + 3° 20' 



Length of tube 220 mm. 



[a] D = +37°;5. 



On the Nucleoproteid of the Suprarenal Gland. 



In a research carried on conjointly with G. H. Whipple,! one of us 

 lately described the nucleoproteid of the suprarenal gland, and showed 

 that this body is a thymo-nucleoproteid. Ultimate analyses showed 

 that the nucleoproteicls of the suprarenal gland of the ox and the 



* Leon Lilienfeld, " Zur Chemie cler Leucocjten," ' Zeit. f. physiol. Chen}., 5, 

 vol. 18 (1894), p. 473. 



f Walter Jones and Gr. H. Whipple, op. cit., p. 423 (Sept, 1002). 



