Seed Collecting in Lodgcpole Pine 35 



any length of time, it is probably best to place them in air- 

 tight cans or jars. It is recommended that before placing in 

 the air-tight vessels the seeds should be dried in a temperature 

 of 30 to 40 degrees Centigrade and also that a small quantity 

 of quick-lime be inclosed to absorb the carbon dioxide which 

 is produced by seed respiration. It is thought that much of this 

 gas is injurious. A deep, cool cellar is an excellent storage 

 place until time for use. 



