"Sir William Edmond Logan was one of Canada's great scientists, whose pioneering geology produced many benefits for Canada. He laid the groundwork for the Geological Survey of Canada, the Canadian Museum of Nature, the Canadian Museum of Civilization and the Canada Museum of Science and Technology." "This volume presents Logan's 1845 field journal, written as his party explored and mapped the Ottawa River from Lachine to the head of Lake Timiskaming, and from the mouth of the Mattawa River to Lake Nipissing." "The journal is sprinkled with fascinating stories of daily life during the expedition - how the field party lived, worked and travelled, the people they met, and the social and economic conditions of the time. In place of a camera, Logan supplemented his notes with sketches of the landscape and geological features." "An introductory essay provides an insight into Logan's records, the survey instruments he used, and the significance of his 1845 fieldwork."--BOOK JACKET.