SIE B. C. BEODIE ON THE CALCULUS OF CHEMICAL OPEEATIONS. 833 



Combinations of the Prime Factors a, ^, 6, K, x, ^, and x. 



Name of substance. 



Prime factor. 



Carbon* 



Acetylene 



Marsh-gaa 



defiant gas 



Benzole 



Carbonic oxide 



Carbonic acid 



Alcohol 



Ether 



Allylic alcohol 



Benzylic alcohol 



Glycol 



Glycerine 



Anhydrous acetic acid 



Acetic peroxide 



Lactic acid 



Tetrachloride of carbon 



Chloride of ethylene 



Chloroform 



Chloride of acet}-l 



Chloracetic acid 



Trichloracetic acid 



Chlorocarbonic acid 



Iodide of ethyl 



Chloriodide of ethylene 



Cyanogen 



Hydrocyanic acid 



Methylamine 



Kakodyl 



Cyanide of kakodyl 



Iodide of phosphotetrethylium 

 Mercuric ethide 



Symbol. 



ax' 

 a'x 



aVf 



aV'0 



aVf 

 a'x^^ 

 aVJ« 



a"x'0' 



3 2 2 



aV 



2 2*-2 



ax'"? 



axV 



a,yK 



aVx 



7 2 4 



a'f x' 

 a'fvx' 

 a"w^x' 



Absolute weight, 

 in grammes. 



0-536 



y X 0-536 

 1-161 

 0-704 

 1-261 

 3-486 

 1-251 

 1-967 

 2-056 

 3-308 

 2-592 

 4-827 

 2-771 

 4-112 

 4-559 

 5-274 

 4-023 

 7-411 

 4-425 

 5-341 

 3-509 

 4-224 

 7-308 

 4-425 

 6-973 

 8-515 

 2-324 

 1-207 

 1-386 

 9-386 

 5-855 

 12-247 

 11-532 



Relatire weight. 



yx6 



13 

 8 



14 



39 



14 



22 



23 



37 



29 



54 



31 



46 



51 



59 



45 



83 



49-5 



59-75 



39-25 



47-25 



81-75 



49-5 



78 



95-25 



26 



13-5 



15-5 

 105 



65-5 

 137 

 129 



(2) Symbol of Silicon. — In the decomposition of chloride of silicon it has been ascer- 

 tained that the volume of chlorine formed is double the volume of the chloride of silicon 

 decomposed. 



Hence, putting a^^^^'j*"' as the symbol of the unit of chloride of silicon, and a"x"'ff"' as 

 the symbol of the unit of sUicon, and z as the number of units of chloride of silicon 

 decomposed, and z^ as the number of units of silicon formed, we have 



* y being the number of units of marsh-gas in the equation (1), Sec. VII. Group 2 (1). 



