402 Scientific Intelligence. 



appendixes, one of which contains the statement of the progress 

 made by the International Geodetic Association for the Measure- 

 ment of the Earth. Another gives an exhaustive statement of 

 work done in accurate leveling in the country with detailed 

 observations. Still another describes the progress of the mag- 

 netic survey of North Carolina, recently inaugurated and con- 

 ducted under the combined auspices of the Coast Survey and the 

 State Geological Survey. This is accompanied by a declination 

 map for the State. The concluding appendix, though brief, is 

 particularly interesting as detailing the general magnetic work of 

 the Survey, now under the charge of Dr. L. A. Bauer. Dr. 

 Bauer has made a minute study of the earth's magnetism for a 

 number of years, and the outlines given here of the investiga- 

 tions that it is proposed to carry on gives reason to hope that 

 great progress may be made in this direction in the near future. 



6. La Navigation Sous-marine ; par Maurice Gaget. Pp. 

 4-72, 12mo. Paris, 1901 (Librairie Polytechnique, Ch. Beranger). 

 — This compact volume contains a full summary of the subject of 

 sub-marine navigation. It treats first of its history; then the 

 theory involved is elaborated, and finally detailed descriptions 

 are given of the various more or less successful modern attempts 

 to solve the difficult problems involved. In this department the 

 French have accomplished much and this work will be read with 

 interest by all those whom the subject concerns. 



7. Geological Survey of Great Britain. — Mr. J. J. H. Teall, 

 President of the Royal Geological Society, has been chosen 

 Director-General of the Geological Survey of the United King- 

 dom (see p. 252). 



8. Geological Survey of Canada. — The Directorship of the 

 Geological Survey of Canada, left vacant by the death of Dr. 

 George M. Dawson, has been filled by the appointment of Dr. 

 Robert Bell. 



Obituary. 



Dr. Henry A. Roavland, Professor of Physics at the Johns 

 Hopkins University and one of the Associate Editors of this 

 Journal, died at his home in Baltimore on Tuesday, April 16th, 

 at the age of fifty-two years. A notice is deferred until a later 

 number. 



Professor George F. Fitzgerald, of the University of 

 Dublin, died on February 2L at the age of forty-nine. He occu- 

 pied a high place among English physicists and his scientific 

 papers were of great value though not very numerous; the most 

 important of them is a memoir (1878) on the "electro-magnetic 

 theory of the reflexion and refraction of light." A movement for 

 the founding of a memorial to Prof. Fitzgerald has been inaugu- 

 rated ; it is proposed to give it the form of an endowment of 

 research in physical science by advanced students. 



Professor Christian F. Lutken, the able Danish zoologist, 

 died on February 6 at the age of sixty-three years. 



