PLATE 24 



A. — Blueberry cuttings starting to grow at 36 F. These cuttings were placed in 

 cold storage while still completely dormant. Although the temperature did not go 

 above 36 F., buds on each of the cuttings finally began to grow. It is to be noted 

 that although growth took place in the buds the other kind of growth which results 

 in the formation of a callus, or healing-over tissue, at the severed base of the cutting 

 is wholly lacking. Callusing can not take place at so low a temperature. 



B. — Blueberry plant growing in the dark at 36 F. This plant was in cold storage 

 in the dark in a commercial refrigerating establishment from March 30 to December 

 4, 1915. The temperature ranged from 33 to 36 F. vSome of the plants in this 

 experiment made new growth to the length of 32 mm. 



