192 NOVA SCOTIAN GEOLOGY.—HONEYMAN. 
33. Lycoperdon gemmatum, Fr. In fields and pastures, 
Common. Aug., Sept. 
Art. IX.—Nova Scotian Geotocy.—Notes on A New GEo- 
LOGICAL PRoGRESS Map or Picrou County. By THE 
Rev. D. Honeyman, D.C. L, F.S. A., Hon. Member of 
the Geol. Assoc., London, &e.; Curator of the Provincial 
Museum, and Professor of Geology in Dalhousie College 
and Unwersity. 
(Read May 10, 1880.) 
INTRODUCTION. 
THE map exhibited is the first of a series which I have been 
engaged for some time constructing, 
They are all on a scale one inch to the mile. Church’s county 
maps are generally used for topography. Occasionally the Ad- 
miralty charts are used in the delineation of harbours and 
portions of coasts of geological importance. From these and 
railway section books elevation measurements are largely ob- 
tained. 
The various papers that I have submitted to the Institute and 
these maps may be regarded as mutually illustrative. 
Additional notes, however, seem to be required, in the case of 
some maps, for the following among other reasons : 
Ist. Railways have been, or are being, constructed which are of 
more or less geological importance. These, in their nature, could 
not be referred to in papers already communicated. 
2nd. New facts may have come to light. 
3rd. Certain old facts may have to be brought into connec- 
tion with these new facts for specific purposes. 
The following notes on the progress map of Pictou county 
seem to be required on considerations as above. 
GREAT CoAL FIELD. 
A prominent feature of our map is an irregular polygon colored 
black. This is the Pictou coal field as defined by Sir W. E. 
Logan and E. Hartley. I have simply transferred it from the map 
