GILLIGAN : THE LOWER PERMIAN AT ASHFIELD, ETC. 
297 
pectively, we get the results shewn on table 2 (p. 295)^ which also 
shews the approximate percentage of kaolin to silica and undecom- 
posed silicates. 
I cannot conclude without expressing my obligation to the Labor- 
atory Assistant, R. Simpson, for the conscientious way in which he has 
carried out my instructions. But for his help, tim.e could not have 
been found for this investigation. 
