Miscellaneous Intelligence. 465 



deposits, that is the ways in which these are formed and the 

 nature of the sediments ; metamorphism is then discussed, first in 

 a general manner and then special phases, such as cementation 

 and metasomatism, contact and regional metamorphism and, 

 finally, weathering. At the end is an appendix in which methods 

 of separation and determination of the minerals occurring in 

 sands, clays and soils are summarized by Mr. T. Cook. 



The nature of the work being understood, it will be found a 

 very convenient elementary treatise for the student of petrology 

 in setting out clearly and concisely the important processes and 

 principles to which the sedimentary rocks owe their origin. It 

 naturally suggests itself that the work should be followed by 

 another in which the classification and petrographic description 

 of the sedimentary and, possibly, metamorphic rocks would be 

 undertaken to complete the series, and possibly this is hinted at 

 in the preface, though not definitely promised by the authors. 



l. v. p. 



III. Miscellaneous Scientific Intelligence. 



1. Carnegie Institution of Washington ; Robert S. Wood- 

 ward, President. Year Book, ISFo. 11, 1912. Pp, xvii, 294 ; 7 

 plates, one text figure. Washington. — The completion of the first 

 year of the second decade of the Carnegie Institution serves to 

 show more definitely than heretofore what it has already accom- 

 plished and what are the most useful fields for its resources. Its 

 history has proved that there is ample place for such an estab- 

 lishment devoted exclusively to the encouragement of research, 

 on a broad and liberal scale, and this without interfering with 

 other institutions already founded. The magnitude of the enter- 

 prise, as at present developed, is impressive, its total receipts 

 from endowment and minor items amounting since 1902 to more 

 than $7,000,000. During the past year the total sum expended 

 was $1,148,000, of which about $520,000 was devoted to the large 

 departments now firmly established, $103,000 to minor projects 

 and research associates, and about $44,000 each to publications and 

 administration. 



Of the various departments to which the income of the Institu- 

 tion is chiefly devoted, much the largest amount has gone to the 

 building and equipment of the Solar Observatory on Mt. Wilson, 

 California, of which Dr. George E. Hale is director. The activ- 

 ity and wide range of work in this department is shown by the 

 fact that the statement of the results of the past year involves 

 a discussion of some thirty-five different subjects, many of them 

 of first importance in astronomical research. Next to this comes 

 the Geophysical Laboratory, under Dr. Arthur L. Day, the work 

 of which is also reviewed in detail. A number of contributions 

 from this laboratory have been published in the pages of this 

 Journal through the year. A new line of research is noted which 



Am. Jour. Sci.— Fourth Series, Vol. XXXV, No. 208.— April, 1913. 

 32 



