90 Proceedings. 



Ordinary Meeting, January 24th, i! 

 Mr. Charles Bailey, F.L.S., in the Chair. 



Dr. Bottomley read an additional note on " The 

 equations expressing the decomposition of Potassic Chlorate 

 by heat." He said : — 



In a previous note, published in the current volume of 

 Proceedings and Memoirs^ the general equation was written 

 as follows : — 



2PKCIO3 = 2QKCIO4 + 2(P - Q)KC1 + (3P - 4Q)02. 

 A more convenient form would, I think, be obtained by 

 dividing both sides by 2, giving the following equation : — 



PKCIO3 = QKCIO4 + (P - Q)KC1 + ^^-^^^Oa. 



This form admits of a greater number of solutions with a 

 given number of molecules of KCIO3 than the previous 

 form. It also imposes a new condition on the values of P ; 

 they must be even numbers. If P = 22, in addition to the 

 equations given in a previous note the following are 

 possible : — 



22KC103= KCIO4+21KCI + 31O.2 



= 3KCIO4+19KCI + 27O2 



= 5KCIO4+17KCI + 23O2 



= 7KCIO4+15KCI + 19O2 



= 9KCIO2+13KCI + 15O2 



= iiKCi04+iiKCl+ii02 



= i3KC104+ 9KCI+ 7O2 



= i5KC104+ 7KCI+ 3O2 

 making in all, with those previously given, sixteen equations 

 (excluding the value O = O). 



Dr. Bottomley also introduced the subject of Mendele- 

 jefPs recent paper on the compounds of ethyl-alcohol and 

 water, published in the Journal of the Chemical Society for 



