06^ 'riiANSACTlONs 01' 8t;CTldN 13. 



the solubility values repreeeut the ratio of gas volume absorbed to the votuui^ ul' 

 t ho absorbing liquid : — 



I. Soluhilitij in Water : 0'823. Experimental error about ± 0'25 per cent. 

 TI. Colloidal ferric hydroxide — 



Grams of Fe(0H)3 in 100 c.c. of liquid l-3ii 0-6« OSl 013(J 



Solubility of CO OSOC. 0-877 837 0-824 



III. Gelatin— 



Grams of gelatin in 100 c.c. of liquid 5 3 1 



Solubility of COj . , . . 0-848 0-834 08-26 



IV. Arsenioxs gulp/tide — 



Grams As.,S3 in 100 c.c. of liquid. . 0-305 0-244 0123 00244 



Solubility'of CO., .... 0-.S22 0-82o 0825 0-825 



v. Silicic acid — 



Grams U^SiO^ in 100 c.c. of liquid . 0113 0-0('.8 



Solubility of COj .... 0-823 0-822 



YI. Dextrin — 



Grams of dextrin in 100 c.c. of liquid . 20 10 5 1 



Solubility of CO.. .... 0-735 0-757 0708 0-817 



VII. Soluble starch — 



Grams of starch in 100 c.c. of liquid .10 5 1 



Solubility of CO., .... 0-77G 0801 081.-, 



VIII. Glycogen — 



Grams of glycogen in 100 c.c. of liquid 1-18 0-2t!.'{ 



SolubiUty of CO, .... 0-80 1 0820 



IX. Albumen. 



Grams of albumen in 100 c.c. of liquid 05 075 



Solubility of CO, .... 0-822 0-823 



E.xperiments, still in progress, have been made with the white of egg, diluted 

 with five times its volume of water. An increase of about 8 per cent, in the 

 solubility of CO^ was found. Soon, however, a precipitate began to form, and the 

 solubility of CO^ diminished, some of the gas which had been dissolved passing 

 out of solution. Finally, there was an increase in the solubility of about 4 per cent. 



6. 2^he Density of Liquids at Low Temperatures. By Dr, J. Timmermans. 



To continue Young's experiments on the rectilinear diameter the densities of 

 liquids from 0° C. to their melting-points have been investigated. 



The thermometric method was employed, using a platinum resi.stance ther- 

 mometer. An apparatus, which contained pure liquids at their melting-point, 

 was devised to keep the temperature absolutely constant. Tho <'\perimentfll 

 error was within 1/10,000. 



The following preliminary conclusions may be stated : — 



1. The 'rectilinear diameter' is very slightly curved down to the melting-point. 



2. The arc of the curvature corresponds to that observed by Young at higher 



temperatures. 



7. The Work of Two Irish Chemists, Bryan H'lggins and 

 William Higgins. By Dr. A. Meldrum. 



The two Irishmen Bryan Higgins and William Higj:lns are known to 

 chemists, if known at all, as, having adopted in the eighteenth century ideas 

 which in some re,spects forestalled the atomic theory of the nineteenth. 



Bryan Higgins (b. 1737, d. 1820) was remarkable as a teacher of chemistry, 

 as a technical chemist, as an investigator into pure chemistry, and also by reason 

 of his atomic speculations. 



He was a pioneer of the r)raotical teaching of chemistry, and gave instruction 



