6 PHYSICAL GEOGRAPHY. 



requisite examinations. Additional appropriations were made in subse- 

 quent years, so that the total cost of the first survey amounted to $9,000, 

 independently of the expense of publication. 



Dr. Jackson employed assistants, whose names and time of service 

 appear to have been as follows : J. D. Whitney, appointed December 7, 



1840, and served during that winter; M. B.Williams, appointed June, 



1841, and served during the summer of that year; W. F. Channing, 

 appointed June 7, 1842, and served during the summer of that year 

 Eben Baker served in the autumn and winter of 1842 ; John Chandler 

 served in the winter of 1842. Their services are said to have been gra- 

 tuitous, the survey paying only the necessary travelling expenses. Some 

 of these gentlemen performed field work other than has been specified, 

 which service will be noted presently. 



Four volumes and pamphlets appear to have been published, contain- 

 ing an account of these researches, as follows : 



First Annual Report on the Geology of the State of New Hampshire. By Charles 

 T. Jackson, State Geologist. 8vo, 164 pp. Concord: Barton & Carroll, State 

 Printers, 1841. 



Second Annual Report on the Geology of the State of New Hampshire. By Charles 

 T. Jackson, State Geologist. 8vo, 8 pp. 1842. Concord: State Printers. 



Final Report on the Geology and Mineralogy of the State of New Hampshire, with 

 Contributions towards the Improvement of Agriculture and Metallurgy. By C. T. 

 Jackson, m. d. 4to, 384 pp., 11 plates. Concord, 1844. Carroll & Baker, State 

 Printers. 



I find, also, in various quarters, reference to another volume published 

 in the following year, probably at the author's expense. 



Vieivs and Maps of Final Report. Reprinted. 410, 20 pp., 8 plates. Boston, 

 1S45. 



The Final Report is made up of the following parts : 



Reprint of two Annual, with the Third Annual Report, . . . 136 pages. 



Preliminary Remarks on the General Science of Geology, ... 28 pages. 



Laws and Official Documents Relative to Survey, 8 pages. 



Economical Geology, 72 pages. 



