682 



INDEX 



Microcitrus, a new genus of Austra- 

 lian citrous fruits. W. T. Swin- 

 gle. 569. 



A new genus, Fortunella, comprising 

 four species of kumquat oranges. 

 W. T. Swingle. 165. 



A new genus of palms allied to 

 Archontophoenix. O. F. Cook. 

 116. 



North American Amaranthaceae. P. 

 C. Standley. 391. 



Or tho pterygium huaucui. P. C. Stand- 

 ley. 628. 



Physiological and plant breeding 

 work, Department of Agriculture. 

 W. T. Swingle. 188. 



Rediscovery of Lignum nephriticum. 

 W. E. Sapford. 232. 



Remarkable new geranium. P. C. 

 Standley. 600. 



Response of plants. J. C. Bose. 183. 



Sacred mushroom of the Aztecs. W. 

 E. Safford. 650. 



Spring flowers in the fall. J. B. 

 Norton. 285. 



Systematic botany. Frederick V. 



COVILLE. 188. 

 *A text-book of grasses. A. S. 



Hitchcock. 244. 

 Tribroma, a new genus of tropical 



trees. O. F. Cook. 287. 

 The Washington Botanical Club. 



E. L. Greene. 188. 

 References. 585. 

 Chemistry. Absorption spectra. E. T. 



Wherry. 231. 

 Acetyl derivatives of sugars. C. S. 



Hudson. 482. 

 Atmospheric nitrogen. W. S. Lan- 



Dis. 481. 

 Concentration of apple juice by 



freezing. H. C. Gore. 229. 

 *Cows' milk modified for infant feed- 

 ing. W. M. Clark. 177. 

 *Cuprous and cupric sulphide. E. 



POSNJAK. 91. 



Dissociation of calcium carbonate. 



R. B. SOSMAN, J. C. HOSTETTER, H. 



E. Merwin. 563. 



High explosives. C. E. Munroe. 

 554. 



Hydrolysis of sugar solutions. W. 

 S. Hubbard and W. L. Mitchel. 

 228. 



Interferometer in quantitative ana- 

 lysis of solutions. L. H. Adams. 

 230. 

 *Magnesium determination in calcium 



salts. J. C. HoSTETTER. 91. 



Methyl- and methylamino-purines. 

 C. O. Johns. 228. 



New hydrogen-ion indicators. H. A. 

 LuBS and W. M. Clark. 609. 



Osmiridium in electrolytic refining 

 of gold. F. P. Dewey. 28. 



Palm-trees, with reference to sugar 

 and alcohol industries. H. D. 

 GiBBS. 481. 



Qualitative analysis. A. A. Noyes. 

 482. 



Rubber tubing for laboratory pur- 

 poses. J. B. Tuttle. 482. 



Sulphur in rubber. J. B. Tuttle 

 and A. Isaacs. 235. 



The silver precipitating capacity of 

 certain arsenides as an index of 

 their constitution. C. Palmer. 486. 



Thymol in urine. A. Seidell. 28. 



Vitamines and beriberi. R. R. Wil- 

 liams. 483. 



References. 585. 



See also: Agricultural Chemistry; 

 Geochemistry; Industrial Chemis- 

 try; Physical Chemistry. 

 Crystallography. Crystal-grinding go- 

 niometer. Fred. E. Wright. 35. 

 Economics. Efficiency in organic evo- 

 lution. A. J. LoTKA. 250. I, 360; 

 II, 397. 

 Electricity. Lightning discharges. W. 

 J. Humphreys. 640. 



Protection against lightning. O. S. 

 Peters. 625. 



•Abstracts. 



