IN NOVA SCOTIA—ELLS. 437 
This volume of Gesner’s was accompanied by a small map of 
the province on which the limits of the several divisions were 
outlined as then understood. 
Of Dr. Gesner, it may be truly said that he was a remarkable 
man for his times. The collection and preparation of the great 
mass of facts contained in his first book must have involved a 
large amount of hardship in the field and in his study, and in 
the preface he states that “amidst the arduous duties of a 
laborious profession, and under the annoyance of perpetua] 
interruption, most of the following pages have been written ; cr 
during the silent hours of midnight, when the labours but not the 
fatigues of the day had departed.” 
Gesner’s subsequent publications relative to the subject of 
Nova Scotia geology may be briefly mentioned. In 1843 an 
important paper was read before the Geological Society of 
London, Eng., which was accompanied by a geological map of a 
large portion of the province, and this shews a marked advance 
as compared with those which had previously appeared ; and a 
similar paper was published in the London Mining Journal in 
1845. 
A second volume styled “ The Industrial Resources of Nova 
Scotia” appeared in 1849, This contained two chapters devoted 
to the geology and mineral resources of the province. In this 
volume it will be readily noticed that a great advance has been 
made in geological science since the date of the first book in 1836. 
The several formations have been fairly well arranged in accord- 
ance with modern ideas of nomenclature, though the work was 
necessarily done on the broad scale. The rocks were arranged 
under seven heads, as follows :— 
Ist. The granites or hypogene rocks of the south coast, 
including the syenites and traps. 2nd. The stratified non- 
fossiliferous rocks of the interior, now known as the gold- 
bearing and other associated slates, which he called;Cambrian, 
in which classification they still remain. 3rd. The fos- 
siliferous clay slates, with greywackes, which he styled 
