702 



INDEX 



Pierce, W. D. fMedical entomology, 



a vital factor in the prosecution 



of the war. 376. 

 Piper, C. V. fThe botany and eco- 

 nomics of the tribe Phaseoleae. 



140. 

 PoPENOE, C. H. tEradication and 



control of the sweet potato weevil. 



459. 

 Preble, E. A. *Winter birds about 



Washington, D. C, 1916-1917. 



407. 

 Priest, I. G. fA precision method 



for producing artificial daylight. 



254. 



*The work of the- National 



Bureau of Standards on the estab- 

 lishment of color standards and 

 methods of color nomenclature. 

 247. 



Purdue, A. H. *Gravel deposits of 

 the Caddo Gap and De Queen 

 quadrangles, Arkansas. 538. 



QuAiNTANCE, A. L. fRecently intro- 

 duced fruit insects. 40. 



RAM.SEY, G. B. *Influence of tem- 

 perature and precipitation on the 

 blackleg of the potato. 565. 



Rand, F. V. fThe Shaw aquatic 

 gardens. 296. 



Ransom, B. H. *Life history of 

 Ascaris lumbricoides and related 

 forms. 38. 



*A further note on the life his- 

 tory of Gongylonema scutatum.. 

 19. 



*The occurrence in the United 



States of certain nematodes of 

 ruminants transmissible to man. 

 39. 



*Recent progress in the devel- 

 opment of methods for the control 

 and treatment of parasites of 

 live stock. 66. 



Rawdon, H. S. *Typical cases of 

 the deterioration of Muntz metal 

 (60-40 brass) by selective cor- 

 rosion. 406. 



Reed, H. R. *Effect of temperature 

 and other meteorological factors 

 on the growth of sorghums. 661. 



Reeside, J. B., Jr. *The Helderberg 

 limestone of central Pennsylvania. 

 172. 



Reille, X. The problem of anti- 

 aircraft firing. 465, t663. 



Reinicker, C. E. *Gas mantle light- 

 ing conditions in ten large cities 

 in the United States. 456. 



Rhoads, a. S., et al. *Host relation- 

 ships of the North American rusts, 

 other than Gymnosporangiums, 

 which attack conifers. 564. 



Richmond, C. W. *Descriptions of 

 two new birds from Haiti. 408. 



*Generic names applied to birds 



during the years 1906 to 1915, 

 inclusive, with additions and cor- 

 rections to Waterhouses' "Index 

 Generum Avium." 131. 



RiCKER, P. L. A sketch of botanical 

 activity in the District of Colum- 

 bia, I. 498; II, 516. 



A synopsis of the Chinese and 



Formosan species of Albizzia. 

 242. 



Riley, J. H. *Three remarkable new 

 species of birds from Santo 

 Domingo. 131. 



RoHWER, S. A. JNotes on the nest- 

 ing habits of the social wasps. 

 211. 



Rosenbaum, J. *Influence of tem- 

 perature and precipitation on the 

 blackleg of the potato. 565. 



Safford, W. E. Chenopodnim nut- 

 tailliae, a food plant of the Aztecs. 

 521. 



Cosmos sulphureus, the xochi- 



palli or flower paint of the Aztecs. 

 613. 



fEconomic Phaseoli of the an- 

 cient Americans. 215. 



fNatural history of Paradise 



Key, Florida. 179. 



