36 THE CANADIAN NATURALIST. [Vol, viil. 



Reaching Halifax on the 20th of May. Logan spent several 

 weeks in examining portions of the coal fields of Nova Scotia 

 and New Brunswick, and it was at this time that he made his 

 section of the Coal Measures at the South Joggins, which? 

 as has been truly said, is " a remarkable monument of his indus- 

 try and powers of observation." It gives details of nearly the 

 whole thickness of the Coal formation of Nova Scotia, or 14,570 

 feet, including 76 beds of coal and 90 distinct Stigmaria under- 

 clays. Shortly after his visit to the Joggins, he wrote to a 

 friend as follows : " I never before saw such a magnificent sec- 

 tion as is there dispayed. The rocks along the coast are laid 

 bare for thirty miles, and every stratum can be touched and ex- 

 amined in nearly the whole distance. A considerable portion 

 has a high angle of inclination, and the geological thickness thus 

 brought to view is very great. I measured and registered every 

 bed occurring in a horizontal distance of ten miles, taking the 

 angle of dip all the way along." And again, in a letter to De la 

 Beche written in the spring of 1844, referring to the Joggins 

 section, he says : " Since my return from field-work, I have re- 

 duced all the measurements and made out a vertical column. It 

 occupies fifty-four pages of fool-cap, closely written, and you will 

 be astonished at the details in it." 



Reaching Gaspe early in July, the summer and autumn were 

 spent in making an examination of the coast, while Air. Murray 

 was at work in the Upper Province, examining the country be- 

 tween Lakes Huron and Erie, The Gaspe peninsula had been 

 selected by Mr. Logan as the field for his first operations, as it 

 was thought that outlying patches of the Carboniferous might 

 be found to exist there, and the government was especially anx- 

 ious to ascertain whether there was any truth in the reported 

 occurrence of coal. 



The following season, the work in Gaspe was continued, the 

 Director being this time accompanied by Mr. Murray, who, in 

 1845, again carried on the work, while Mr. Logan was engaged 

 in explorations on the Upper Ottawa and Mattuwan. Altogether, 

 during the three seasons, 800 miles of the Gaspe coast were ex- 

 amined, and several sections made across the peninsula, from 

 the St. Lawrence to Bay Chaleur. No coal was found, but 

 many geological facts of importance were accumulated, and a 

 large amount of topographical work accomplished in what was 

 previously almost a terra incognita. 



