ciirijcinr-i. and nklson in\KUs. 7 d 



\deut\Aos i\s Sti-osfethiuJii Citnadcnsr. A liiu» oravliiiLC w;is (rlnaincd incmyiinff. 

 the bi-ooks I'.owinu' into the Climvhill near the .sea. From a specimen 

 submitted to Prof. CJill, lie finds the species to ho Thi/mallus si(/7i{fer. 

 The salmon lVe([iienlinc^ the moiUh of tiie Clnirchill is tlie same species j;„jnj„„ 

 which is more al)unthint on tlie oast side of Hudson's Buy, and was 

 referred to in my report for 1SV7. A sea-trout is also found in the '"^en-tr-Hit. 

 mouths of the Churchill, Nelson and Hayes rivers, as well as alonic the 

 east side of Hudson's and James' bays. 



Lisects.— The Coleoptora, which I collected in the rci^non of the^'^'^^'^'*^^''*^- 

 Churchill and Nelscm rivers, were kindly determined by Dr. J. L. 

 LeConte, of Philadelphia, and a list of them will bo found in the 

 appendix. The Lepidoptera of the district which I explored last ^-'epi'ioptera. 

 summer have been studied by Herr Getfcken, formerly of Stuttgart, 

 Germany, who has kindly furnished me with the list of species given 

 in the appendix. The specimens were collected principally by the 

 Venerable Archdeacon Kii'kby, who resided until 1879 at York 

 Factor}'. 



MoUushs. — Owinii: to the muddv and brackish nature of the water, ,, , , „ 



^ ^ ' JludFon 3 Bay, 



no mollusks are found in the part of Hudson's Bay near York Factor}'. 

 About the mouth of the Churchill river the onh' living species observed 

 were the common mussel {MytiJus eduHs) and a species of Littorina. 

 Dead shells were abundant on the beach, of Pccten Islandicm, Cardium 

 Islandicum, Mija arenaria, JL tnmcata, Astarfe lactea and Bhynchonclla 

 psittacea, but all these appear to have been washed out of the drift-clay, 

 which abounds fj-om below the sea-level upward. A list of the fresh- List of fresh- 

 water shells collected in the district, together with some from Manitoba. ^^'^^^^ ^''^'^^'^s- 

 is given in the appendix. 



Waters of the Eed and Assiniboixe Eivers. 



In tlie earlier days of the Geological Survey, analyses were made by 

 Dr. T. Sterry Hunt of the waters of the great rivers of what then con- 

 stituted Canada, as well as of those of many mineral springs and wells. 

 As it was considered desirable to continue this important work in refer- 

 ence to the principal rivers now included in the Dominion, I obtained sample? from 

 samples of the waters of the Xelson, Eed and Assiniboine rivers for ''^''*^® "^'*^'^' 

 experiment. A complete qualitative and quantitative analysis of each 

 of the two last mentioned is now being made in the laboratory of the 

 Geological Survey, and the results will be reported on by Mr. Hofl^"- 

 mann. Having also brought home samples of each of these waters^'""'"" 



•^ ^ 1 samples. 



six years before, which were afterwai'ds submitted to Dr. Baker 

 Edwards, F.C.S., for analysis, I shall give his results in referring to 

 the subject of the water-su])ply of the city of Winnipeg. The bottles 



