I lo The Ottawa Naturalist. [September 



Dennison Olmstead, Jr., received the appointment but owing- 

 to ill health could not assume the duties. He died early in the 

 year. 



T. Sterry Hunt, at the age of 21 years, received the appoint- 

 ment and came to Montreal the following- F'ebruary. 



1847. 



Log-an devoted most of the season to work on the south side 

 of the St. Lawrence, from Montreal and Lake Champlain to the 

 Chaudi^re River. 



Murray went to explore the northern shore of Lake Huron. 

 He took four Indians from Montreal. Going by Detroit he took 

 steamer to Sault Ste. Marie and from there explored the north 

 shore and the Manitoulin Islands to Manitowaning. He left La 

 Cloche on August i6th to survey the French River to Lake 

 Nipissing. 



Hunt spent part of the summer with Logan, but afterwards 

 went to Lachute and Grenville to collect fossils from the lime- 

 stones of the Ottawa. He visited ihe falls on the Gatineau and 

 examined the rocks there, and also the iron-ore at Hull. From 

 there he went to Perth and examined the apatite deposits of North 

 Burgess. The mineral, perthite, was analyzed by his pupil, Mr. 

 Hartley. Mineral waters were collected from Caledonia Springs, 

 Tuscarora, Charlotteville and Ancaster, Ont. 



1848. 



Logan spent only two months in the Eastern Townships when 

 he determined to pay a visit to Lake Huron. There he examined 

 the Bruce Mines, and with Marray ascended the Thessalon River 

 before returning to the Eastern Townships. 



Murray made a short excursion up the Grand River to Gait 

 and then went to Goderich, examining the rocks on the Ashfield, 

 Maitland and Bayfield rivers. Then he proceeded along the lake 

 shore to Sarnia, and by Lake St. Clair to Windsor. Then from 

 Detroit he took steamer to Sault Ste. Marie and joined Logan at 

 Bruce Mines. Separating from Logan on September 5th, he went 

 along the coast to Spanish River and ascended it for sixty miles. 



