446 GEOLOGICAL INVESTIGATION IN NOVA SCOTIA—-ELLS. 
who, from 1869 to 1872, published several articles on the same 
subject. Papers of more or less importance relating to the gold 
of Nova Scotia, have also been printed by Mr. C. Fred Hartt in 
1864 and by Mr. H. F. Perley in 1865, both in the Canadian 
Naturalist of Montreal, and by Professors Marsh in 1851 and 
Silliman in the American Journal of Science. 
Among contributors to the literature pertaining to the coal- 
fields of the province, in addition to those already referred to, may 
be mentioned Mr. H. Poole who contributed two papers, one in 
the Journal of the Geological Society of London, 1853, the other 
in the Canadian Naturalist in 1860, and Professor J. P. Lesley, 
whose elaborate article on the structure of the Cape Breton areas 
was published in the American Journal of Science for 1863. 
From the pen of the late Dr. H. How of Windsor, several 
valuable articles appeared between 1857 and 1866, principally in 
the Transactions of the N. S. Institute of Natural Science. These, 
for the most part, described the occurrence of valuable and some- 
times rare minerals, found at different places in the province. 
Various publications, more particularly relating to the occurrence 
and determination of fossils from various localities have also 
appeared from time to time, both in the official reports of the 
Geological Survey and in various scientific journals, and represent 
the work of Messrs E Billings, T. C. Weston, D. Honeyman, H. 
Poole, H. M. Ami and others. These can only be thus briefly 
alluded to, since the aim of this paper has been to give broadly 
some slight sketch of the leading workers in this field, and a brief 
statement of the results of their labours. The details of the sub- 
ject may well be left to others, who through a more intimate 
acquaintance with the progress of geological science in the 
province, both as regards men and localities, are better fitted 
than the writer for the task of elaboration. 
