10 Repoet of the State Geologist. 



passed authorizing the completion of this map and appropriating 

 a small sum annually for defraying the field expenses of a com- 

 petent assistant or assistants for determining the limits of certain 

 formations which are now imperfectly delimited. Moreover, such 

 a work may well be done as field exercises by a professor and his 

 students during the college vacations, the whole being carried on 

 under competent direction with a definite purpose for a final con- 

 summation of the work. The description of the geologic forma- 

 tions of the State as represented upon the map will form a part 

 of a future report, and it is intended that separate copies of this 

 description shall be sent to all the institutions and individuals 

 who shall receive copies of the map. 



I would, moreover, earnestly recommend that in the continua- 

 tion of the work upon the geologic map especial attention be 

 given to the economic aspect of the science. For many years the 

 Legislature has liberally supported the publication of the Palaeon- 

 tology as a part of the l^atural History publications of the State, 

 according to the original plan of that work. There has been no 

 organized plan for developing a knowledge of the mineral 

 resources of the State, as might have been done through annual 

 reports and local geologic maps of the counties, had there been 

 some small appropriation for field work. Among intelligent 

 people there is, at the present time, an urgent demand for practi- 

 cal geologic work, and I believe it should be most seriously con- , 

 sidered in connection with the completion of the geologic map. 



During the past twenty years- the State of Pennsylvania has 

 expended an amount of more than $1,500,000 in her second geo- 

 logic survey, which has been chiefly carried on with a view .to 

 economic results. The State Atlas contains colored geologic 

 maps of every county in that State, each county map being 

 accompanied by a special report given to the geology and eco- 

 nomic resources. 



I have endeavored to introduce a similar plan in my work upon 

 the geologic map of New York, and the report of last year 

 contains a description of the geology and an account of the eco- 

 nomic resources of Albany and Ulster counties. 



We have now on hand, waiting for publication, certain colored 

 maps of portions of the State, especially the maps of Albany and 



