similar publications. The accompanying alias hardly be asked by one familiar with sheets, more than forty in numbei', add much results of the survey of Wisconsin. In vol. i
��to the value of the reports.
The leading contributors are Prof. T. C. Cbamberlin, chief geologist, and Messrs. R. D. Irving, Moses Strong, E. P. WhitBeld, Charles E. Wright, T. B. Brooks, E. T. Sweet, L. C. Wooeter, and F. II. King. In connection with lithological determinations and reports, stand the names of Irving, Wichmann, Pum-
��appear several chapters of economic import, tbe express purpose of which is to make easy of comprehension the principles which are in- volved in such every-day matters as the sink- ing of artesian wells, the )nanufacture of brick, tile, etc., the selectiou of building-stone, the relations of soil to fertilizers, where and how to search for ore-deposits, — questioiu concerning whieb the opinion of tba geologist is of prae- tical worth.
Attention has thi-oughout been di» rected to known mineral resources with a view to th^ future development, and particularly to thase formationa nhich, from their relationship to pro- i otive mineral- ing forniatioDS
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��where
��for
��pelly, Van Hise, and Julien. Vol, i. also embraces reports on selected topics in natural history, notable among which is King's report OD the economic relations of our birds.
A characteristic feature of the publications is the relatively large amount of practical in- formation brought within the reach of the intel- ligent citizen who has little technical knowledge of science. Indeed, the oft-repeated question of which every geologist must be weary — ' What is tlio object of the survey? ' — would
��olhor reasons, were thought, from an ecouomic |x>iDt of Mew, to merit care- ful investigation. The benefits, bodt | positive and i _ tive, which have ao- A cnied to the stats 1 as the result of sndi I investigations, hare I already been conf- I sid(.rable, and irilt I doubtless be stflZ I greater in time to J Lome. Otherni ral resources hftTQrl ,, not been neglected. X ' Attention has beM>1 directed to variooCil building-stones of considerable merit; some of them, in consequence, have alrea^iJ found their way into the market. The sabjjeofc'l of artesian wells has received special study at 1 the hands of the chief geologist. It is doubt* 1 fill if the problem of subterranean wnter-aapplj J over a commensurate area of such diversity of-u character is anywhere better understood.
The survey has done more than assist in ( dcvelopmcDt of natural resources, and its wodcf is to hv. commended for other than econoia'
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