THE AVEST AMEEICAN SCIENTIST. 83 



given: The singing sand may occur in comparatively small patches in the midst of 

 ocdinary sand. It always occurs between the limits of high and low tide. The 

 same sand does not produce sounds at all seasons, nor does it always give forth like 

 sounds. Whe.1 wet it does not emit sound-. Samples, when transported in bags 

 lost their sonorousness, but retained it when sent in bottles.' The leading theory 

 is that the sound is produced b/ fric'ion between the angular particles, and the 

 conditions are believed by Professor Julien to be perfect dryness, uniformity of 

 grain, varying from one-fifth to one-tenth of an inch in diameter, and freedom from 

 dust. Buffalo Courier. 



SCIENTIFIC SOCIETIES OF CALIFORNIA, 



1 — Directory. 



California Academy of Sciences, San Francisco: Geo. Davidson, Pres.; S. B- 

 Christy, Cor. Sec. 



California State Geological Society, San Francisco: Henry G. Hanks, Pres.; 

 S.Heydenfeldt, jr., Sec. 



Geographical Society of the Pacific, San Francisco. 



Natural History Society; San Francisco: Wm. H. Barrows, Pres. ; Wm. C. 

 Flint, Cor. Sec. 



San Diego Society of Natural History: Georgj W. Barnes, Pres.; Miss Rosa 

 Smith, Cor. Sec. 



San Diego Lyceum of Natural Sciences: R. J. Gregg, Pres.; George N. Hitch- 

 cock, Cor. Sec. 



San Francisco Microscopical Society, (P.O. box 1327): C. M. Kinne, Pres.; 

 C. W. Banks, Cor. Sec. 



Santa Barbara Society of Natural History: H. C. Ford, Pres.; Mrs. . R. F. 

 Bingham, Cor. Sec. 



Humboldt Society of Natural History, Areata, Humboldt county: Carl C. 

 Marshall, Sec. 



Historical Society of Southern California, Los Angeles; Isaac Kinley, Pres.; J. 

 C. Oliver, Sec. 



Ventura Society of Natural History, San Buenaventura: Stephen Bowers, 

 Pres.; J. S. Collins, Sec. 



Southern California Museum Society, Los Angeles: Prof. J. H. Von Keith, 

 Pres. and Sec. 



California State Mining Bureau, San Francisco: Wm. Ireland, jr.. State 

 Mineralogist. 



Valuable publications have been received from Dr. C. A White, Dr. Asa Gray , 

 Harry A. Hilsbry, Dr. C. C. Parry, H. N. Rust, John W. Phillips, A. A. Crozier, 

 Henry B. Baker, Historical Society of Southern California, Massachusetts horticul* 

 tural society, Wisconsin academy of sciences, arts and letters. 



