
Ohta 93 
Gooseberry. 
6 Industry. 
Lihubard. | 
Colossal, 7 Myatt’s Linneus, 
Early Crimson, Prince Albert, 
Early Scarlet, Scarlet Nonpareil, 
Gen. Taylor, Scofield’s Prince Albert, 
Giant, Tobolsk, 
Magnum Bonum, Victoria. 
Marshall’s Royal, 
Merrororoey. 
The influence of temperature upon vegetation is an important 
one, but the influence of the actinism of the sun’s rays has perhaps — 
a superior influence to the temperature. Complete records in re- 
lation to plant development require the temperature, cloudiness, 
and intensity of action of the sun’s rays to be noted, and the effects 
of each as a factor in excess to be studied upon the plant. We have 
been unable to make such observations in completeness, but have 
maintained a series of soil thermometers ranging in depth from one 
inch to two feet, and the readings made thrice daily. 
- The soil thermometers were made by Green, of New York, for 
this special purpose, the stem being lengthened and so arranged as 
to bring the graduation above the ground. Hach thermometer was 
inclosed in a pine casing, for the purposes of protection, and inserted 
at the proper depth in spring, to remain untouched during the sea- 
son. We give-in another place in detail the result of the daily 
readings for the season of 1883 and 1884. As the soil receives its 
temperature from the sun, we have upon the average perhaps a 
better record of the seasonal temperature in the soil temperature 
than can be obtained through three readings only of an air ther- 
mometer. 
In order to compare the seasons of 1883 and 1884, we can tabu- 
late the soil temperatures to six inches deep, for the growing 
months, June, July and August, as follows: 
Soil temperatures, 1883, 1884; mean of readings 1, 3 and 6 
inches in depth: 
A. M. : Noon. P. M. Gen’] av’ge. 
1883. 1884. 1883. 1884. 1883. 1884. 1883. 1884. 
Deg. Deg. Deg. Deg. Deg. Deg. Deg. Deg. 
RE SG CDITO vps gad kiss ced once. snes 60.9 62.5 70.38 74.9 70.8 4.5 67.2 70.6 
LUE eer eee Paties nls vip ee 62.5 62.0 69.4 3.9 69.9 74.8 67.3 70.2 
“Lis 5S Gs ORO Oc eee eee 64.7 66.7 72.5 80.0 72.4 %7.9 69.8 74.9 
RAE ee Tile xan ae sess» oie vo ss Soe 66.2 65.3 76.0 74.8 74.4 743 72.2 1.5 
July 2d ila rraer ts SS eeRR DMS Seo Mies 65.3 62.1 73.8 71.0 70.38 71.3 69.8 68.1 
* July 3d Wola and od Wage vale eg oF) one 64.3 65.6 72.7 3.7 73.3 74.1 70.1 71.1 
August Ist third ........ Tonis pid ane es ale 61.9 63.5 71.6 73.0 72.4 %4.2 68.6 70.2 
meigistesd. Pee des on Sotaas wince ote 64.8 68.8 73.3 2 74.9 83.0 71.0 7.3 
PIMUE OO) pelscc sve tabesgeverees «Ole 64:2 70.1 73.5 71.7 735 67.7 70.4 
MORN coe leicp vec veaseseneres 63.5 64.5 72.2 75.0 72.2 15.3 69.3 71.6 
