NATL'I^Al. (ONIIIOL IN \\KIOlS I .( »( A 1 .1 1 I KS. 39 



about on per von\. From .hiuc 2") till nflci- ScplciiilxT 10 showers 

 were oi" frtHiuont occuriHuicc and I he rccoids show diiriiiLC tliis jx'iiod 

 an aveni|i:o ndatiNc lumiidiiy of 7") per cciil. I)(nd)tl('ss wvy signifi- 

 cant facts initrht \)c l(>arii(>d if foi- oliici' localities data similai- to tiiosc 

 ol^taincnl for Cal\(M-l were a\ ailal)le foi* conipai-ison. 



INFLUENCE OF CLIMATIC CONDITIONS ESPECIALLY. 



Ill further dolcriuiniiiii; whethiM- ehniatie couihtions wei'e the most 

 important factors afl'ectintj; th(^ total mortalitv percent aires, con- 

 clusit)ns may be more readily drawn by arran*j:inu- the data in three 

 i]^rou{)s, ranginj^ from tbe highest total mortality to the lowest. 

 Group A may include the eleven k)calities ha\ ing a total moitality 

 above the average of 52 per cent, ranging from S4 to 02.5 pei- cent. 

 Group B may inchide seven localities having a total mortality langing 

 from 51.4 to o9.4 per cent. The division between Group B and 

 Group C is made because of the rather large difference in percentage 

 of total mortality shown between 39.4 per cent, the lowest in Group B, 

 and 28 per cent, the highest in Group C. Group C includes ten local- 

 ities with the total mortality percentage ranging from 28 per cent to 

 zero. Each group is summarized to facilitate a general comparison 

 of the average resiUts of the observations made and of the average 

 climatic conditions prevailing. The data are presented in Table VH. 



