308 Scientific Intelligence. 



less noteworthy is the fact that Dr. Kobert S. Woodward, who has 

 guided the Institution so wisely for many years, has retired and 

 his place has been taken by Dr. John C. Merriam, until recently 

 of the University of California. An adequate knowledge of the 

 work accomplished the past year can only be gained by a study of 

 the summaries given by the directors of the different depart- 

 ments, ten in number, which fill pages 43 to 357 of this Year 

 Book. To these large grants nearly $1,000,000 of income have 

 been devoted In addition to these are the minor grants, calling 

 for an expenditure of about $140,000 ; the results of which are 

 noted in pp. 359 to 464. 



The number of volumes issued during the year is 18, with an 

 aggregate of over 4,000 octavo and nearly 1,400 quarto pages. A 

 total of 442 volumes have been published since the beginning 

 with a total of over 124,000 pages. Of the many lines of original 

 work discussed in this report, of especial importance is the first 

 measurement of the diameter of a fixed star, accomplished at the 

 Mount Wilson Observatory; for this Drs. Michelson and Pease 

 with the Director, Dr. Hale, deserve great credit. The star 

 first measured is the well-known Betelguese and its linear 

 diameter was found to be 215,000,000 miles. The diameters 

 of Arcturus and Antares were found to be about 21,000,000 

 and 400,000,000 miles respectively. Some uncertainty as to these 

 Values arises from the fact that the parallaxes of these stars are 

 not absolutely known, but the epoch-making character of the 

 work can be in part appreciated even by the layman. It is also 

 to be noted that the magnetic survey of the oceans has been prac- 

 tically completed by the non-magnetic ship Carnegie, which since 

 1909 has voyaged nearly 300,000 miles. 



Recent publications of the Carnegie Institution are noted in 

 the following list (continued from vol. 3, p. 157, February, 1922) : 



No. 175. Bauer, L. A., in collaboration with J. A. Fleming, 

 H. W. Fisk and W. J. Peters. Land Magnetic Observations, 

 1914-1920, and special reports by J. A. Fleming, H. W. Fisk, 

 and S. J. Barnett. (Researches o'f the Department of Terrestial 

 Magnetism, vol. IV.) Quarto. Pp. vi, 475, 9 pis., 17 text figs. 

 ($7.25). — This volume presents, in continuation of the previous 

 volumes of researches (No. 175, vols. I, II and III), the results 

 of magnetic observations made by the Department of Terrestrial 

 Magnetism, 1914-1920, and four special reports: 



No. 306. Contributions to the Geology and Palaeontology of 

 the West Indies ; by T. W. Vaughan and E. T. Jackson. Octavo. 

 Pp. iv, 122 pp., 18 pis., 6 text-figs. — R. T. Jackson's paper gives an 

 account of all the species of Echini which have been so far found 

 occurring as fossils in the West Indies, with keys for the identifi- 

 cation of genera and species showing their geographical and geol- 

 ogical distribution. T. W. Vaughan 's paper gives in succinct 



