310 Messrs. Buckmaster and Gardner. Estimation of [Feb. 1, 



from sodium instead of caustic potash as recommended by Mcloux, as we 

 were unable in this country to obtain potash absolutely free from chloride. 



I. Analyses of Chloroform by the Carius and by the Nicloux Method {Dumas* 



Reaction). 



The chloroform used in these experiments was kindly distilled for us by 

 Dr. J. Wade of Guy's Hospital. It had a boiling-point of 6M4°— 61* 15° C. 

 at 760 mm. and a specific gravity 1*5088 15°/15°. The results of the analyses 

 are given in Table I and Table II. 



Table I (Carius' determinations). 



Amount of 

 chloroform taken. 



Percentage of 

 chlorine. 



Theoretical 



percentage of 



chlorine. 



Percentage of 

 chloroform found. 



gramme. 

 -1177 

 -2721 

 '2683 



89 -172 

 89 -139 

 89 -084 



89 '102 

 89 '102 

 89 '102 



100 -07 



100 -03 



99-97 



Table II (Nicloux' determinations). 





Amount 



Percentage of 

 chlorine found. 



Theoretical 



Percentage of 





of chloroform 

 taken. 



percentage of 

 chlorine. 



chloroform 

 found. 





gramme. 









I. Made with a solution 



-0184 



89 -262 



89 -102 



100 -18 



of -92 per 1000 c.c. 











of alcohol 











II. Made with a solution 



-0315 



88 -041 



89 -102 



98-8 



of 1 -575 per 1000 c.c. 











of alcohol 











III. Made with a solution 



-0335 



87 -935 



89 -102 



98-69 



of 1 -6764 per 1000 c.c. 











of alcohol 











IY. Made with a solution 



-06785 



86-66 



89 -102 



97-26 



of 3 -3556 per 1000 c.c. 











of alcohol 











Y. Made with a solution 



-018735 



90-54 



89 -102 



101-6 



of 9 -3675 per 1000 c.c. 











of alcohol 











YI. Do. do. 



-04684 



87 -378 



89 -102 



98-06 



From the second table it will be seen that the average percentage of 

 chlorine found by the Nicloux method from the sample of chloroform is 

 88*3, a figure which is 0'8 per cent, below the theoretical value. The figures 



