13 
Part II].—Oprn AIR WORK—EXPERIENCE IN NATURAL CLIMATES. 
Page. 
CHAPTER EX, DEEN OWOG Vetee an ae aan eats Se ee eh SP Ses 167 
The relation of temperature and sunshine to the development of plants— 
Thermometric and actinometric constants (Réaumur; Adanson; Hum- 
boldt; Boussingault; Gasparin; Lachmann; Tomaschek; Kabsch; 
Sachs; Deblanchis; Hoffmann; Herve Mangon; Belland; Marié-Davy; 
Georges Coutagne; Van Tieghem; Lippincott) --..*----..----------- 168 
Studies in phenology— 
CUTTS a ets es Bere Seo ge Se ep ee ee 181 
TEvrear SC a SS SS a a ee 189 
TN SS CT eae nnn, Sarwan eee meres hee hae Bee) BES oe oe. ee Se Ee 211 
Applica ions Gi limsser hi TOSUILS =. sees 2 oe aso ee ok fe oe 233 
IDOWO seas See Sat Se ee oe ee ca ee aes 234 
TEI@iiaaaeThaU at. jy se ge lee SS LE at OS le A ee eee 236 
Marié-Davy (1877; 1878; 1882; USO 3 eal O90) eee ae ee eee een, OAS 
Angot (I, 1882; II, 1886; III, 1888: LIN ASAUCEID 95 3 ene a» ee 278 
Requests for Ohedaleeicdl observations of uncultivated plants (Smith- 
seine Ieiougenhhe) =. eee eee ee ee ee ee ee eee 290 
CHAPTER Xe ACChIMATIZATION ANDPELEREDITY 22 22. 22222-2+--2----2---= 295 
Gree (Baha) Sele ek Cee ee ee a ee ee 295, 
EELASHCHE CS DOLE) ts 2 ee oe SA as gon ee ease ese 299 
(Ceres) SaCE re W.Cl)) wean er ee ee ee ere ieee oe a eo Be ae 300 
Cottons (Elammond)) eee eee ee ee ee ee ee eee 305 
Beansh (Den Camd Olle) prccess ta eee ry ae ee O. 306 
ape Ge CHILO V edt Umem ner tae tan, Se ais ie Soe See See SS 307 
Meniuckysplinororadcs. (Hunt) 2 2-223 5-2 5-5 eee ka sessed Se 307 
CHAPTER XII. RELATION OF SPECIAL CROPS TO SPECIAL FEATURES OF 
CLIMATE AND OTHER INFLUENCES -..--. ------ pe oe oe ea 309 
eSiaranO POLATOOS | CDTIOWN Ree ene tne ces ee ese eee ss = See 309 
SUusarsbeetsn (LUM) sees ns eee eet Een eo es, See 310 
Grassesi (iad dHoltem) = yas. sas ee ee Oe Joe 2 Bere 310 
@erealsedichardsom) sea. tore eee eee ee Pee, See 312 
Wheat—General relation to climate and soil (Brewer) ______._____- 314 
Cultivation of cereals—Experiments at Brookings, S. Dak. _ Wheat_ 
Barley—Oats—Maize—Meteorological record for 1888 and 1889 _____- 318 
Maize— 
ndlanai tee a es ne eee eS Se i PE Meena DEN Mr ees uy Sal 331 
ING way OG Ks Ce itil) een rs eee RS ea ey le Sk ee 382 
IME SSOUTIA (SCH WielLZOl) eae sae ae see eens a, NT ee 333 
Pennsylvania (Frear and Caldwell) _----...------....------------- 333 
MT TaTOISy GED b) eee Re oe See ae Peg ay NES et < WM AI tar 334 
Maize and peas—New York (Sturtevant) -_._..-._--_.----------------- 335 
Sorghum—United States (Wiley and Stone) ___-_.____---------------- Sir 
Oats— 
SAT SA See teers Sot ee see hye ee eee Se Pe elo a 337 
LET ee pen nee Nepe  e  E E g e o  SSS oT 338 
iHreezine or plants and seeds: (Metmer) 2. =. 2225-4 2-8 22s _ 2-5-2. 338 
Injuries and benefits due to wind-breaks_____-________-_-_--_---------- 340 
HUNG ESrShOLM Stand OZONels= ey he es eee ee 341 
Sts NR VCESTSTGHINAGOm eee oe ee Sena Gash ce Se ok ee 341 
Wheat, temperature, and rain in England --_-_---_----------.---------- 341 
Suearcrop and Tay in barvagos = == 2 5 s-- 5222 e---- 22 sa Lee 2 344 
