191 



Scientific Intelligence. 



7. Parasitology : a supplement to the Journal of Hygiene ; 

 edited by George H. F. Nutall and A. E. Shipley. — A newly 

 established journal devoted to the publication of original contri- 

 butions on the biology of the animal parasites of man and 

 animals. 



IV. Miscellaneous Scientific Intelligence. 



1. A New Goniometer Lamp ; by Frkd. Eugene Wright. 

 (Communicated from the Geophysical Laboratory.) — The gonio- 

 metric measurement of minute crystal faces requires a source of 

 illumination of such intensity that for the past five years the 

 writer has employed an electric arc goniometer lamp (Proc. Amer. 

 Philosophical Soc, xlii, 237-238, 1903) for the purpose. Certain 



Fig. 1. 



B 





f\ ' 







'HP 1 * ■ 



C 





features of the arc light, however, are not favorable for its con- 

 stant use, and although, on occasion, it is the best light procura- 

 blej other sources of illumination have been found better adapted 

 for general work. — The Nernst light is an excellent source, and 

 were it not for the present unreliability of the filaments, would 

 serve every purpose. — The acetylene light, however, has been 

 found by experience to be the most serviceable, and the following 

 goniometer lamp has been constructed for its use. This lamp is 



