1164 
Journal of Agricultural Research 
Vol. XXX, No. \2 
minimum temperature of 29° was 
recorded at Vineland. This completed 
the destruction of the flowering shoots 
on all except a' few varieties in which 
growth had not advanced far. Thir¬ 
teen varieties—Agawam, Cynthiana, 
Franklin, Hartford, Herbemont, Iona, 
Lenoir, Missouri Riesling, Noah, Nor¬ 
ton, “Seibel Hybrid No. 2^” Vergen- 
nes, and Wilder—suffered little or no 
apparent injury. With all other 
varieties there was either entire fail¬ 
ure to fruit or considerably smaller 
than normal crops from buds which 
were dormant at the time of the 
freeze (9). Unfortunately it. was not 
possible to visit the vineyard at the 
time of the freeze, so the only informa¬ 
tion available on the effects of the 
months were dry. Rainfall equaled 
the normal in March and very slightly 
exceeded it in April, after which it 
remained below normal until the 
close of the growing season. The 
months of April to October received 
only 18.44 inches of rainfall as com¬ 
pared with the normal 27.01 inches 
for this period, so that the whole 
period of development and ripening 
of the crop was niarked by a steadily 
increasing deficiency of water. Severe 
drought conditions developing in July 
were partially relieved by the August 
rains, which were 86.6 per cent of 
the normal, but drought again became 
severe in September and October. 
The mean temperature, after drop¬ 
ping to normal in May, rose again in 
Jan. Feb. Maw. Apb. May June Joey Aug. Sept Oct Nove Dec. 
Fig. 8 .—Maximum, minimum, and mean monthly temperatures in 1921 at Vineland, N. J., with a 
50-year average for comparison 
freeze is that given by the owner and 
his employees, two of whom were 
thoroughly familiar with the vineyard 
through continuous employment there¬ 
in from the time it was planted. 
Their statements agree that in practi¬ 
cally all varieties two to three weeks 
were required for development of new 
growth to the point it had reached at 
the time of the freeze. 
Data on the yield of the various 
varieties were obtained in detail at 
the time of harvesting the crop, as it 
was recognized that reduced yields 
might materially affect the chemical 
composition of the crop. This data 
is presented as percentages of normal 
crop in Tables III and IV. 
The precipitation for the year was 
very markedly deficient. The winter 
June and July considerably above 
the average, dropping slightly below 
normal in August, then remaining 
above normal for the remainder of 
the year. 
The number of days reported as 
clear in the months March to Septem¬ 
ber, inclusive, was 119, or 55.6 per 
cent of the total, as against 110 clear 
days, or 51.26 per cent of the total, 
for the year 1920. If we repeat the 
assumption made in the discussion 
of the 1920 conditions, that one-half 
the time reported as “partly cloudy” 
days be considered as clear, we have 
27 additional days, making a total 
of 146, or 68.2 per cent of the growing 
period. This is practically identical 
with the approximation of 145 days 
arrived at by a similar process for 
