236 ANNUAL KECORD OF SCIENCE AND INDUSTRY. 



occupied in a similar manner in reference to her own Western 

 territory. Several important geological and geographical 

 surveys have been instituted, in addition to the great gen- 

 eral geological survey that has been in progress for many 

 years, the reports of which have proved of such standard 

 value. During the past season Mr. Selwyn, director of the 

 geological survey, and Mr. R. Bell, have been engaged in the 

 regions watered by the North Saskatchewan, while Mr. 

 Richardson has been on the other side of the Rocky Mount- 

 ains, in British Columbia. Mr. G. M. Dawson, geologist of 

 the Boundary Commission, has just completed a survey of 

 the Lake of the Woods and its neighborhood, and during the 

 season many collections have been made in the country west 

 of Pembina, which, although not equal in value to those of 

 Dr. Coues in the same field, will yet prove of much impor- 

 tance. 12 A, October 16, 1873, 513. 



FINAL EEPOETS OF DK. HAYDEn's EXPLORATIONS. 



During the many years in which Professor Hayden has 

 been engaged in prosecuting the geological and geographic- 

 al survey of the Territories, an annual report of greater or 

 less magnitude has attested the industry of himself and asso- 

 ciates, and the value and character of his investigations. He 

 has now commenced the publication of the general results 

 of his labors in systematic form (somewhat upon the plan of 

 the Smithsonian contributions to knowledge), and to occupy 

 five stout quarto volumes. These will constitute a library 

 of reference for the physical and natural history of the great 

 West, and, as such, promise to occupy a high i^lace in the 

 scientific literature of the day. 



Of this series of reports the first published is that by Dr. 

 Cyrus Thomas, upon the Acrididce, a group of insects, em- 

 bracing what are called grasshoppers in the United States 

 and locusts in the Old World, and including some of the most 

 destructive insect pests known. Of these he enumerates 

 about one hundred and twenty species. The types have all 

 been placed in the United States Agricultural Department 

 for permanent preservation. The work forms a large quarto 

 of about two hundred and fifty pages, constituting the first 

 part of a volume to be devoted exclusively to an account of 

 the recent zoology of the West. 



