from the Iron Pyrites occurring near BrocJcville, 199 



sitates its purification in Canada, and as is well known, sulphuric 

 acid is the most efi'ective deodorizer that can be employed in re- 

 fining it. In proportion then as refineries for petroleum are es- 

 tablished, the demand for sulphuric acid will increase, and no 

 doubt a manufactory of this acid would be able to dispose of an 

 immense quantity. There are very few chemical manufactures 

 which may be said to be indigenous to Canada, but this one, of 

 the products to be obtained from these pyrites, in conjunction with 

 that of refined oils from crude petroleum, possessing a natural 

 and sound foundation in the province, would flourish rapidly, and 

 doubtless be permanently successful. 

 Acton Vale, C. E., 13th May, 1862. 



ARTICLE XIX. — List of Entomologists in Canada. By Rev. 

 Charles J. S. Bethune, B. A., Cobourg, C. W. 

 The following list of those engaged in the study of Entomology 

 in Canada has been prepared chiefly with the object of making 

 collectors known to each other. It is almost unnecessary to state 

 that the idea was suggested by the lists in Stainton's Entomologists' 

 Annuals. It was at first considered that the great and primary ad- 

 vantage to be derived from it was that collectors in one part of 

 the country would be enabled by its means to find out who are 

 addicted to their favourite pursuit in other places, and thus obtain 

 specimens of those local species in which their own collections are 

 deficient Since, however, the number of those engaged in this 

 study has proved to be so much larger than was at first anticipa- 

 ted, several of my correspondents have agreed with me in the opin- 

 ion that it would tend very much to the advancement of Entomo- 

 logy in this country, were a club to be formed, and meetings to 

 be held once or twice a year at some central place, to be decided 

 upon hereafter. We have come to the conclusion that, if this 

 project meets with sufficient encouragement from Entomologists, 

 no better time or place could be selected for the first meeting than 

 that appointed for the next exhibition of the Provincial Agricultu- 

 ral Association, which is to be held at Toronto, during the week 

 commencing September 22nd, 1862. If such a meeting can be 

 held, it is much to be desired that Entomologists should bring to 

 it all their undetermined specimens, as well as any duplicates they 

 may have of rare species; by so doing favours could be mutually 

 conferred, and much information difl'used with regard to the dis- 

 tribution of species, etc. The Meeting would, doubtless, prove ad- 



