348 Scientific Intelligence. 



mission Spectra ; Part VII, Infra-red Emission Spectra ; by 

 William W. Coblentz. Pp. 183, with 107 figures. 



No. 98. The Topography of the Chlorophyll Apparatus in 

 Desert Plants; by William Austin Cannon. Pp. 42, 15 figures 

 and 5 plates. The Induction, Development, and Heritability of 

 Fasciations; by Alice Adelaide Knox. Pp. 20, 1 figure and 

 5 plates. 



Nos. 102, 103. Papers from the Tortugas Laboratory, Depart- 

 ment of Marine Biology of the Carnegie Institution of Washing- 

 ton, Alfred G. Mayer, Director. In two volumes, Vol. I, pp. 

 190 ; Vol. II, pp. 325. — These volumes contain nineteen papers by 

 H. E. Jordan, W. K. Brooks, A. G. Mayer and others. 



No. 106. The Gases in Rocks; by Rollix Thomas Chamber- 

 lin. Pp. 80, with 2 text figures. Noticed on p. 190. 



3. Report of the Superintendent of the Coast and Geodetic 

 Survey, O. H. Tittmann, showing the Progress of the Work from 

 July 1, 1907, to June 30, 1908. Pp. 169, 4to, with 9 illustrations 

 in pocket. Washington, 1908. — This Report gives a summary of 

 the work of the Survey during the last year. The most important 

 feature of this is the completion of the reconnaissance for the 

 extension of the primary triangulation from the 98th meridian in 

 Central Texas across Mexico and California, to the triangulation 

 of the same class which extends along the Pacific coast across 

 California, Oregon and Washington. This reconnaissance ex- 

 tends along the arc of the parallel for a distance of about 1200 

 miles. The completion of the triangulation along the 98th 

 meridian is also an interesting completion of the year's work 

 extending across the country from Canada to Mexico ; this arc 

 has been also extended into Mexico. It is further stated that 

 Canada has begun a geodetic survey, so that the work of the 

 International Geodetic Association for the study of the earth and 

 other related problems is being steadily pushed forward. Much 

 progress has also been made during the year on the boundary line 

 between the United States and Canada, and on the Alaska-Can- 

 ada boundary. Appendix 3 (pp. 69-165), by R. L. Faris, gives 

 the results of the magnetic observations of the year. 



4. Principal Facts of the Earths Magnetism and Methods of 

 Determining the true Meridian and the Magnetic Declination. 

 Pp. 96 with 28 figures. Washington, 1908. — The edition of the 

 paper issued by the U. S. Coast and Geodetic Survey on the 

 Declination Tables for 1902 having been exhausted, the publica- 

 tion has now been issued in revised form wilh such corrections 

 as were necessary. The scope of the work makes it of great 

 general interest, since it is, in fact, a full and readable presenta- 

 tion of the principles of the magnetism of the earth, giving a 

 digest of the subject, with many illustrations, from the earliest 

 historic times. It is not surprising that so interesting a summary 

 of this important subject should have found many readers. 



