AUTHOR INDEX 
§Relativity. 192. 
Kempton, F. E. {Barberry eradication 
in the United States. 191. 
Kiess, C. C. tSpectra of chromium and 
molybdenum. 218. 
— Titanium, regularities in are spec- 
trum of. 270. 
Kress, Harriet K. Titanium, regulari- 
ties in are spectrum of. 270. 
Kanure, Exutsworta P. Urticaceae, new 
species of, from Colombia. 354. 
Krausg, K. Schizocasia regnieri; note 
on, 253. ; 
Krocu, Aucust. {Respiration of insects. 
160. 
Lampert, W. D. {Mechanics of. the 
Taylor-Wegener hypothesis of conti- 
nental migration. 448. 
Lititz, Frank R. +Hormones, sex, prob- 
lem of. 235. 
Linpsera, A. R. {Variation of metallic 
conductivity with electrostatic 
charge. 45. 
LirrLenALes, G. W. {Geographic posi- 
tion, finding of, from observation of ' 
celestial bodies. 215. 
Lorka, Atrrep J. Quantitative para- 
sitology. 152. 
Lounssury, C. P. tEntomological work 
in South Africa. 159. 
LumspDEN, Davip. {Raising orchid seed- 
lings by use of mycorrhizal fungus. 
187. 
Mann, ‘A. B. tUsefulness of diatoms. 
Bia. 
Marmer, H. A. {Tidal phenomena in 
New York harbor. 219. 
Matuews, A. P. Space and time, reduc- 
tion of all physical dimensions to 
those of. 195. 
Maxon, W. R. Microstaphyla, the [fern] 
genus. 28. ! 
McCuvre, F. A. tHainan, observations 
of botanical collector on island of. 
238. 
Meccers, W. F. §Line structure in com- 
plicated spectra. 139. 
—— Vanadium, regularities in are spec- 
trum of. 317. 
Mersincer, C. LeRoy. j{Free-air pres- 
sure maps and their accuracy. 333. 
Merriam, J. C. {Cats of Rancho La 
Brea. 238. 
eves Plants 
459 
Meyer, K. F. +tBacillus botulinus, sum- 
mary of studies on. 14. 
Mouter, F. L. §Atomic structure of 
chemical elements. 94. : 
Moorr, R. B. 7tGases, rare, history, 
properties, and uses. 13. 
Morey, Grorce W. Heating-curve and 
quenching methods of melting-point 
determinations. 326. 
OBERHOLSER, Harry C. Nectariniidae, 
new East Indian. 226. 
Orton, W. A. tPhysiatric botany. 191. 
Putrers, C. G. {Refraction of glass at 
high temperatures, changes in index 
GED, 21% 
Prrrizr, H. Melastomataceae from Vene- 
zuela and Panama, new or little 
known. 384. 
collected in 
* America, note on. 428. 
Poprnorn, Wixson. tFruit-growing and 
ornamental gardening in Chile. 412. 
Posniak, Evemn W. Lithium iodide and 
rubidium floride, crystal structures 
of. 393. 
Ranvs, Rosperr D. +Botanical gardens 
and plant industries of Java and 
Sumatra. 239. , 
Rouwer, 8. A. Hymenoplera, three new 
Pemphredonine wasps. 369. 
ROSENHAIN, WALTER. {Structure 
constitution of alloys. 4438. 
Rupe, G. T. fInstruments and methods 
for observation of tides. 138. 
Ryppere, P. A. Senecioid Composites. 
tropical 
and 
287. 
SANDHOUSH, Grace ADELBERT. Key to 
South American bees of genus 
Halictus, subgen. Chloralictus. 383. 
SCHALLER, WALDEMAR T. Argentojaro- 
site, new silver mineral. 233. 
ScuramM, G. N. {Tarnishing and de- 
tarnishing of silver. 139. 
Suantz, H. L. {Botanic gardens of 
South Africa. 189. 
Simmons, Perez. tHouse-fly plague in 
American Expeditionary forces. 374. 
Skeets, H.C. tChayote, Chayota edulis, 
early fruiting strain of. 411. 
SmytH, E. Graywoop. {Trip to Mexico 
for parasites of Mexican bean beetle. 
259. 
