HONEYMAN — ON NOVA SCOTIAN GEOLOGY. 11 



I proceeded to examine the rocks of Arisaig with the aid of the new 

 light furnished by Mr. Salter's report, and the suggestions of other 

 eminent British and Continental Geologists and Palaeontologists. 

 I pitched my tent among the rocks and remained among them for 

 nearly three months. I investigated thoroughly the nature and 

 relations of the different parts of the series, studied thoroughly its 

 palaeontology, added materially to my collections of its fauna, and 

 endeavdtired to ascertain the range of the several families, genera, 

 and species, in time. 



I communicated the results to the Geological Society in a paper 

 with map and sections, to be found in the Journal of 1864. It is 

 with some satisfaction that I have now to add that after the lapse of 

 seven years and after having made at least one other thorough ex- 

 amination of the district, I still regard this paper as a reliable hand- 

 book with which to examine Arisaig. I may have something to 

 add to the observations then recorded, but very little to correct. 

 At that time I discovered a bed of Graptolites at Doctor's Brook, 

 in the black shales underlying the Clinton strata of Arisaig. These 

 Graptolites include various diprionidean forms which appear more 

 to resemble the Hudson Eiver Graptolites than the Clinton. I 

 extended these shales to McDonald's cove to the westward, where 

 I found Cone-in-cone concretions and Lingula in nodules like my 

 Barney's River Lings^la bed, and thence to Arisaig cove to the south 

 of the pier and the north-east of the strata, with Graptolites Clinton- 

 ensis. I did not then find in the band an extensive fauna, and was 

 led to infer that the conditions under which the shales were deposi- 

 ted were not favorable to animal existence. 



This is an inference that I have since been led to modify. 

 At this time I discovered the noble Cephalopoda of Middle Arisaig, 

 or the Niagara limestone equivalent, and I also discovered at 

 Doctor's Brook the equivalent of the Lochaber Petraia strata. By 

 this discovery I was enabled to ascertain the exact position of those 

 strata in the system, to make a larger collection of fossils than it 

 was possible to make at Lochaber or Marshy Hope, and to ascertain 

 the mode and order of their occurrence. In my paper I styled this 

 A Arisaig-^^octor's Brook, McDonald's cove and to the S. of the 

 Frenchman's barn (rock). I also found connected with this, 



