335 
Average 
Date of cutting. weight. Remarks. 
Grams. 
JMO MONS Me a ee eee Na) eee eoee sc Ssess 0.51 
UME eee Skee ee oe eek eso see eee 2 2.48 
SUNG Bosses has eee ea dtee wera een eee 10.11 
ec yglleeeen eee ee een ene wee RS eee 33. 84 
eUllivs Sheen seseeis eons Seek os Sos ae cause 75.46 
Vg eee eee ee ag on Ss ee eee ee weaned 197.99 
Dt gd 4 ncde eae tegee Soe Seee ees tee eee 322.91 | Tassels showing; not in bloom; no silk. 
SUT Vaio) oe eeeeee Sue ee ee oT eee ee od | 408.07 |: Allin tassel; in bloom; in silk. 
STU STONEL (3) gs «le eS ps ee ea 589. 10 
INIDERTENH SB Se ee, eg | 681.55 | Silks dead or partly so. 
PATIOS TIO MAU SCOR Ne ne oe te econ once eee 724.449 | Soft milk stage. 
PANU OTIS Hei eens ee ee ere ee eee nes Gee 949.53 | Milk stage or passed. 
Septentberie asters noe el ee Weak VO Ae | 906. 22 | Mostly glazed. 
Sepremiberml Oss eet Seek esse oe (1,034.55 | Varies from milk stage to ripe. 
SeptomiberrG! a2 2 eee Sen as iI, 176.00 | All ripe except 1 ear. 
Professor Hunt finds that the varieties of corn that mature about 
September 25 give the largest yields; date of planting has little influ- 
ence on the yield. Depth of planting and drilling versus hill planting 
did not affect the yield in 1888 or 1889. The quantity of seed planted 
was more important than the allotment of the kernels to the hills; 
preventing the growth of weeds was more important than stirring 
the soil; pruning of roots injured the crops; shallow-working  cul- 
tivators gave better results than deep-working; commercial ferti- 
hizers did not materially increase the yield, but stable manures did 
so. (Agr. Sci., Vol. IV, p. 184.) 
MAIZE AND PEAS. 
NEW YORK. 
Sturtevant (1884) gives the results of two years’ observations 
(1883 and 1884) at the experiment station, Geneva, N. Y., on the 
thermal constants of many varieties of maize and peas. He observed 
both the temperature of the soil and the air, and takes for his com- 
putations always the first plant which sprouted, bloomed, or ripened. 
Observations of 128 varieties of maize, four hills to each variety, 
gave an extreme variation of 19 days between the blooming of the 
first and last hill, the average interval being 4.92 days. As Sachs 
adopts 49.1° F. as the lowest temperature at which maize will ger- 
minate, and K6ppen gives 49.2° F., therefore Sturtevant adopts 
50° F., and considers that any observed temperature, less 50° F., 
leaves a remainder that is nearly proportional to the growth of maize 
at that temperature. <A similar lower limit of 44° F. is adopted for 
the growth of the pea. He notes that in 1885, by trial at this exper- 
iment station, the “ Chester County Mammoth Corn” germinated 
