

236 The Ottawa Naturalist. [March 



vast amount of useful and practical information on the mineral 

 and other resources of the Dominion, as do also the maps which 

 accompany these reports, giving in a graphic form the leading 

 geological features of the territory included. This "General 

 Index" is therefore hailed with delight, as a work which gives 

 ready reference to the various economic products in a series of 

 volumes containing 6585 pages of text, not only by all who are 

 interested in the resources of our great Dominion but also by all stu- 

 dents in science who may desire to carry on further researches in 

 the various districts comprised in the reports indexed. The 

 amount of time henceforth to be saved in searching for informa- 

 tion on the thousand and one points referred to in each of the 

 volumes indexed cannot be over-estimated, and all persons into 

 whose hands this index may fall will bless its projector as well as its 

 author. An index to all the Geological maps referred to in the 

 Reports may be found under the word " Maps." 



Mr. Dowling's Index will also be of much value for biblio- 

 graphic references on the work performed by the various officers 

 of the Geological Survey from 1866 to 1885 under the name of 

 each officer ; and, as the readers of The Ottawa Naturalist are 

 aware, we were favoured by Mr. Dovvling, in vol. XIV., No. 6, of 

 The Ottawa Naturalist for September last, with a chronological 

 index to the field work done by the officers of the Survey from its 

 commencement to 1865, so that there is now available for ready 

 reference for geology and geological work in Canada a complete 

 record from 1843 to the present time. 



ENTOMOLOGICAL SOCIETY OF ONTARIO. 



We have received a General Index to the Reports of this im- 

 portant Society, covering all of their annual Reports from the 

 beginning in 1870, until the end of 1899. There is no series of 

 reports on practical entomology of greater value to Canadian 

 farmers, fruit-growers and gardeners, than these popular publica- 

 tions. The present Index will be of inestimable value 10 the 

 thousands of Ontario farmers u lio have frequent occasion to con- 

 sult these reports, which now cover a period of thirty years. The 

 work has been excellently well done by the Rev. Dr. Bethune, of 

 London, who since the foundation of the Society, has always taken 

 a most active part in advancing its interests. The price of the 

 Index is 25 cents in paper, or 50 cents neatly bound in cloth. It 

 is on sale by the Society at London, Ont. 



