INDEX 



559 



Radiotelegraphy. Comparison of arc 

 and spark sending apparatus. L. 

 W. Austin. 284. 

 Crystal contact disturbance pre- 

 venter. L. W. Austin. 386. 

 Further comparison of arc and spark 

 radio transmission. L. W. Austin. 

 517. 

 Radiotelegraphic signals. L. W. 



Austin. 133. 

 *Rece'nt experiments in radioteleg- 

 raphy. L. W. Austin. 299. 

 *Regulation of intercommunication. 



F. A. KoLSTER. 299. 

 Signals in radiotelegraphy. L. W. 



Austin. 326. 

 References: 30. 

 Railroads. *Work of Alaska Railroad 

 Commission. A. H. Brooks. 300. 

 Royal Society, London. 250th anniver- 

 sary celebration. L. O. Howard. 

 121. 

 Staiistics. References: 448. 

 Technology. *The metric carat. 533. 



References: 535. 

 Terrestrial Magnetism. *The earth in- 

 ductor as an inclinometer. N. E. 

 DORSEY. 49. 

 Land magnetic observations, 1905- 



1910. L. A. Bauer. 20. 

 *New type of compass declinometer. 



R. L. Faris. 112. 

 Origin of the Earth's magnetic field. 

 L. A. Bauer. 1. 



Preliminary results of a first analy- 

 sis of the sun's general magnetic 

 field. L. A. Bauer. 513. 

 Topography. *Physical aspects of Aus- 

 tralia and New Zealand. J. Bryce. 

 297, 339. 

 Vital Statistics. A natural population 



norm. A. J. Lotka. 241, 289. 

 Weights and measures. *Types of false 

 weights and measures found in U. 

 S. 46. 

 Zoology. *American species of Peri- 

 patus. A. H. Clark. 170. 



*The brain as a guide to the affinities 

 of vertebrates. B. G. Wilder. 

 176. 



*Crinoids. A. H. Clark. 168, 169, 

 170, 171, 294, 336, 456. 



*A remarkable skeleton of Stego- 

 saurus. C. W. Gilmore. 538. 



*A revision of the crinoid family 

 mariametridae. Austin H. Clark. 

 504. 



*Revision of the crinoid genus Hira- 

 erometra. A. H. Clark. 533. 



*Sawflies and their relation to for- 

 estry. S. A. RoHWER. 175. 



*Study and culture of the common 

 eel. H. M. Smith. 268. 



*Tree-shrews. M. Lyon, Jr. 268. 

 Web-spinning fly larvae. O. F. 

 Cook. 190. 



*Zoological results of the Denmark 

 expedition. F. Johansen. 268. 

 — ■ — See also: Entomology; Helmin- 

 thology. 



* Abstracts. 



