Miscellaneous Intelligence. 243 



physical Observatory. Considerable time has been occupied by 

 the aid acting in charge in preparation of the text for this 

 volume, which it is hoped to publish during the coming fiscal 

 year." 



2. United States Coast and Geodetic Survey ; O. H. Titt- 

 mann, Superintendent. Terrestrial Magnetism : Results of Mag- 

 netic Observations made between July 1, 1905, and June 30, 

 1906; by L. A. Bauer. Appendix No. 3, Report for 1906. 

 Pp. 107-209. — Distribution of the Magnetic Declination in the 

 United States for January 1, 1905 ; by L. A. Bauer. Appendix 

 No. 4— Report for 1906. Pp. 213-226. 



These advance Appendixes from the Report of 1906 give the 

 prominent results of the recent magnetic work of the Survey. 

 Appendix No. 4 is particularly noteworthy as it presents a new 

 isogonic chart for the United States for January 1, 1905, with 

 also secular change tables for one or more stations in each of the 

 states and territories. This chart has a special value because 

 based on more accurate data than were available for any of its 

 predecessors. Accurate observations have been obtained at thirty- 

 five hundred points, distributed with fair uniformity over the 

 country. As the result of these, there is a much greater degree 

 of accuracy in the isogonic lines ; they thus show a much larger 

 number of peculiar features, particularly as to the turns and 

 twists, corresponding, in many cases, to the prominent physio- 

 graphic features of coast lines, mountain ranges, rivers, etc. The 

 completeness of the magnetic survey as now conducted will be 

 appreciated from the statement that the three magnetic elements 

 have been determined on the average for one station to every 

 nine hundred square miles, or thirty miles square, over the whole 

 country. Considering the area involved, which is nearly equal to 

 that of Europe, the United States possesses the most complete 

 magnetic survey of any country. A new feature of the present 

 chart is the extension of the isogonic lines over the contiguous 

 oceanic areas, these resting upon all available recent sea determi- 

 nations, chiefly from the vessels of the Coast Survey, of the United 

 States Navy and of the British Navy. 



3. Carnegie Institution of Washington. — The titles of vol- 

 umes recently issued by the Carnegie Institution are contained in 

 the following list (continued from p. 75) : 



No. 44. Researches in Experimental Phonetics. The study 

 of Speech Curves ; by E. W. Scripture. 4to. Pp. 204, with 

 13 plates and- 138 figures. 



No. 47. Rythmical Pulsation in Scyphomedusa? ; by Alfred 

 G. Maye-r. Pp. 62, with 36 figures and 6 tables. 



No. 48. In Investigation of Evolution in Chrysomelid Beetles 

 of the genus Leptinotarsa ; by William Lawrence Tower. 

 Pp. x, 320, with 30 plates and 31 figures. 



No. 56. Energy Changes involved in the Dilution of Zinc 

 and Cadmium Amalgams ; by Theodore W. Richards and 

 George S. Forbes. Pp. 68, with 10 figures. 



