few factors are involved. .7ind is of course the most important of these 

 in the consideration of winged seeds like those of the white pine.i'his 

 part of the study has "been taken up in connection with the reproduction 

 study during the summer of 1915. The plan followed has been to make 

 rough maps indicating the relative positions of reproduction and seed 

 trees and to record other data having a hearing on the subject, as 

 illustrated on the sample record under methods of collecting data. 



In addition to this enough trees have been cut in each plot, 

 and the annual rings counted, to ascertain the various ages of reproduc- 

 t ion, to determine the seed years for the last forty years. 



The object of this study has been to collect such data as 

 will be useful, combined with future observations, in the solution of 

 these problems rather than to attempt a solution at the present time. 



METriODS USJilD IN GOLLEUTINCJ MTA. 



In collecting data in this werk the following methods have 

 been used:- 



'*'' In the study of the .woodlots in regard to the seed crop of 

 the fall of 1914 each woodlot was taken separately and a card was 

 kept for each speeies.The trees of each species were divided into the 

 usual cro^7n classes ; Dominant ,Codominant,Int enmediate, and Suppressed. 

 The records were kept on 4X6 cards as illustrated in the following 

 speci^ien. 



■*If a dry year should follow the distribution of seed it is probable 

 that many of the seeds would lie over and not germinate the summer 

 following their distribution. Diiring seasons of normal rainfall, however, 

 the majority of the seeds should germinate the first summer , judging 

 from germination as found in the seed beds in this locality. 



