June 15,1925 Environment and Chemical Composition of Grape Juices 1159 
are presented in Figure 3. The detailed light showers until mid-July, when a 
data from the adjacent stations at At- period of extreme heat and drought set 
lantic City, Philadelphia, and Trenton in. This was broken by rainfall of 
have been examined, and some general 6.36 inches on July 31. August was 
facts adduced therefrom are stated in extremely hot with only one wetting 
the subsequent discussions, but the rain (0.64 inch) on the 15th. This 
graphs representing sunshine are based somewhat accelerated the maturing of 
on the Vineland data alone. The the crop. The normal rainfall and 
mean temperature records show that cooler weather of September, followed 
January was a month of exceptionally by drought and heat through October, 
low temperatures, the coldest on record permitted normal ripeping of a crop of 
in the State. From February on slightly less than average size. No- 
through May the mean was consist- vember was mild, dry, and warm, the 
ently well above the average, the last first killing frost occurring on the 7th, 
killing frost occurring on May 7. June, and December was normal in rainfall- 
July, and September were slightly be- but exceptionally warm and without 
low, August somewhat above normal, snow. The year was one which was 
Ikch&s 
8 ---- 
Rmnfall amd Sunshine 
Ppr.nRD 
Jan. Fca Mar: Apr. May June Joly Aika S*pt. Oct. Nov. Pec... 
Q Cubar Pays || Partly Cloudy Days , § CuoudyDays Days of Raik 
Fig. 3.-—Rainfall and sunshine at Vineland, N. J\, in 1918, with 49-year average for comparison. (All 
days on which a trace, 0.01 inch or less, was recorded are included; hence, some days recorded as 
clear are also included under days of Tainfall) ^ 
# ' 
and warm mild weather was continuous considerably deficient in soil moisture 
from October 1 through the remainder throughout the growing season but 
of the year, the first killing frost occur- which supplied conditions for maximum 
ring on November 7. photosynthetic activity through an un- 
The outstanding features of the pre- usual percentage of sunshine well dis- 
cipitation for the year was its marked tributed over the entire growing season, 
deficiency (7.94 inches), its irregular That this characterization of the con- 
distribution,. and the infrequency of dition for photosynthesis is justified 
prolonged periods of cloudy, showery will be at once evident from a compari- 
weather. The vines began to grow son of Figure 3, showing number of 
early in the season and the conditions clear days per month, with the graphs 
during the blooming period were favor- presenting like data for subsequent 
able to the setting of a crop of fruit of years. The seven months, March to 
normal size on almost all varieties. September, inclusive, which cover the 
Pollination of a few varieties was some- period from resumption of growth to 
what interfered with by rain on May 9. maturity of the fruit, had 18 to 23 days 
The low rainfall of June was accom- each which were reported as clear,* a 
panied by cool weather with occasional total of 141 days for the seven months. 
52244—25t——5 
