[ADAMs] CLIMATIC FACTORS IN RELATION TO PLANT LIFE 119 
TABEE, LXe 
NUMBER OF FIVE-DAY PERIODS WITH + INCH OR MORE OF RAIN. 
May—OctToser, 1910-12. 
Vin. SR ee a RE he SP teres SN er ene 
(Cut Vaya ral oa Se aes pa Oe ne ec ORS Miro Fae snr nan ane ea EA 1 
MOTOR ee ete te ee Sel Vee ats Wee ap it CONS tas a aN se ee re 1 
lbh tebe ER Chey el PM a a ee ae 1 
OS D dS O1 
In the absence of data showing the actual number of hours in 
which a given amount of rain falls the number of thunderstorms 
during the growth period will furnish valuable information as to the 
torrential character or otherwise of the rainfall. These are given 
in Table X. 
TABLE X. 
AVERAGE NUMBER OF THUNDERSTORMS May-—Oct., 1910-12. 
SOL RNC] UNS ee ea ak ee pen NN ce cs San Sort Ghe ab onsiars ate Nea wake 1 in 3 years. 
WTI COUN CI eh eR ene! SE ee SN cuca ee eee Wie es 
(CRE LE RE ET na EL ER RE ER D ee 1 
IProycie WEIRTa IOI G a ocean ET ep Man SN ERA Era RAR el 8 
ugh DONS SE tis recA GRAS? EN TE 15 
SOKO tO Me EME ata ans Nays SR CREER IE SA. ey 24 
ÉTAT Kee ee cM cee nts Eis, audrire + 
Fogs are somewhat similar in their effects to rain but contribute 
little to the moisture content of the soil. As they prevent pollination, 
diminish photosynthesis and transpiration and lower the temperature, 
the number of fogs in any locality is of considerable importance. 
Those for a number of different places are given in Table XI. 
TABLE XI. 
Focs 1909-12. 



Average for 6 months. | Average for 6 months. 
Nov.—Apr. May-Oct. 
Triangle Island, 1910-12........... 91 99 
VANCOUVER sea hom, Sn Shs vider sory « 12 5 
OPA DPENC RER TS er + 5 
PORT AT mer ee CGS MNT 73 3 18 
PORN SEL HE NUE Cine ks 12 11 
Dé ra ati dé sotren can hs 1 in 3 years. lin 3 years. 
Re LL Se lcci gun i haps 12 33 
Chatlottpte walled: dete cats ihe ns, 2 2 
ARE ate RU ere, es à 8 13 
Sable Islande eer ae are Dre 26 67 
