68 PROCEEDINGS OF THE BOSTON MEETING 



conditions on this highest peak of New England were sent by telegraph 

 to the newspapers. The series of observations there was extended through 

 many years by the United States Signal Service, being found very 

 significant for weather predictions, which were soon afterward begun 

 from comparisons of the telegraphic reports of many observers through- 

 out the country. 



Volume I of "The Geology of New Hampshire/^ published in 1874, 

 treats of the physical geography, climatology, the fauna, flora, and 

 scenery, with the history of the survey, and of explorations among the 

 White Mountains. Ten chapters are by Professor Hitchcock, and nine by 

 assistants of the survey or specialists in natural history. The second 

 volume, on the stratigraphic geology, published in 1877, has eight chap- 

 ters written mainly by Charles H. Hitchcock, and two chapters, with 

 parts of two others, by J. H. Huntington. Volume III was issued in 

 1878, having three parts. Under the title for Part III, Surface Geology, 

 the glacial drift is described by Professor Hitchcock, and the modified 

 drift by the present writer, who was his assistant during the second half 

 of this survey, 1874-78. Part IV, entitled Mineralogy and Lithology, is 

 by George W. Hawes; and Part V, Economic Geology, by Professor 

 Hitchcock. 



Among early endeavors to portray the geology of the entire United 

 States, a very noteworthy map was compiled in 1872 by Charles IT. 

 Hitchcock and W. P. Blake, for the Ninth Census, and for E. W. Ray- 

 mond's report of mineral resources. On a much larger scale, of twenty- 

 five miles to the'inch, Professor Hitchcock in 1881 issued his United 

 States geological map for class-room use in schools and colleges. For 

 this map he consulted every work that had been printed on the geology 

 of this country, and obtained the privilege of using much unpublished 

 information collected by geologists in States and Territories where sur- 

 veys had not been carried to completion. 



In the progress of the New Hampshire survey, a relief map or model 

 of that State was constructed under the direction of Professor Hitch- 

 cock, having a scale of one mile to the inch horizontally and a thousand 

 feet to the inch vertically. Its length was thus about fifteen feet, and 

 Mount Washington was shown with a height of slightly more than six 

 inches. Copies of this relief model were placed in the museum of Dart- 

 mouth College, in the State House at Concord, and in the American Mu- 

 seum of Natural History, the last being colored geologically. County 

 and township boundaries, villages, cities, railroads, rivers, and lakes were 

 delineated, but not the areal geology. 



Nearly twenty years later, between 1894 and 1898, Professor Hitchcock 



