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NEW YORK STATE MUSEUM 



portion of which he compiled from the early Natural History re- 

 ports, since he says he had not yet seen the 1842 map. County 

 maps, black or white etchings, next began to appear in the New 

 York Society of Agriculture Transactions but are of little 

 importance. 



In 1865 there was published by the Canadian Geological Survey 

 in its report of progress for 1863, a Geologic Map of Canada and 

 the Northern Portion of the United States. The Canadian por- 

 tion of this map was prepared by Sir W. E. Logan while the 

 United States portion was compiled under the authority of 

 Prof. James Hall. It is of interest in connection with this paper 

 because of the fact that the New York State geology indicated 

 upon it is the first authoritative revision of the 1842 map. The 

 map is on a scale of 125 miles to the inch and is very well colored. 

 Ii was in reality a reduction from a much larger map on a scale of 

 25 miles to the inch which although already engraved in 1863 was 

 not published till 1867. This larger map was published separately 

 and not widely distributed. It is said that but three copies were 

 sent to the United States. 



Up to this time colorations of maps in this country had been 

 done by hand, a tedious and often unsatisfactory process. In 

 European countries, schemes for color printing had been devised 

 and successfully carried out, as early as 1843. In America, how- 

 ever, the chroir.olithographic methods supplanted but slowly the 

 hand coloration and although the first map printed in color ap- 

 peared in 1853 in Massachusetts, no such work was carried on 

 in New York State till 1875. The first map with printed colors in 

 the State appears to have been the map of New York State and 

 the Eastern States by Hall appearing in the Museum reports. 



The early Museum reports, the first of which appeared in 1848, 

 contained but few maps previous to 1884 and the maps of the 

 period 1875 to 1885 were published mainly by the American Jour- 

 nal of Science and other private publications, by James D. Dana 

 and others, and dealt with eastern and southeastern New York. 



The maps appearing in the years 1885 and 1886 dealt also with 

 eastern New York with the exception of a map of Ontario county 

 by John M. Clarke, and several maps dealing with the oil region 

 of Allegany county were the first economic maps to be published. 



In the nineties the most notable feature was the earnest endeavor 

 made to work out the relation in the Adirondack crystalline area. 

 This work was commenced in 1895 by Kemp and a number of 

 maps appear in that decade by Gushing, Kemp and others. Glacial 



