5 4 THE NEW RHUBAKB CULTURE. 



Plants brought in Dec. 17th, frozen, 

 No. 3, 9 plants, grown in the light, 

 No. 4, 7 plants, grown in darkness, 



Plants brought in Jan. 9th, repeatedly 

 frozen, 

 No. o, 8 plants, greenhouse darkness, 

 No. 6, 8 plants (5 large 3 small), 

 cool cellar, dark, 



Too much dependence must not be placed on these 

 yields. Plants taken from the college garden were used, 

 the variety being unknown. They may, or may not have 

 yielded as well as plants should. The conditions were 

 not such as to warrant drawing definite conclusions con- 

 cerning comparative yields, but they do show very clearly 

 the necessity of allowing plants to freeze before attempt- 

 ing to force them. They also seem to show some advan- 

 tage in yield in favor of plants grown in darkness rather 

 than in light. But the most striking difference is shown 

 in the greater yield from plants grown in the dwelling- 

 house cellar, as compared with those grown under green- 

 house benches. 



As to the lengtli of time required after bringing the 

 plants in from the field, it may be said that in the above 

 lots, No. 1, unfrozen, grown in the light, yielded prac- 

 tically nothing at any time. No. 2, unfrozen, growil in 

 darkness, yielded the bulk of its crop more than two 

 months after being placed in position. N"o. 3, frozen, 

 grown in light, gave its first large picking eight weeks 

 after being brought in and the second two weeks later, 

 the bulk having been taken at these two times. No. 4, 

 frozen, grown in darkness, yielded several pounds 17 

 days after being brought in and the bulk, within the next 

 two weeks, but continued to yield something for a period 

 of six weeks. No. 5 yielded one ]iound ])er plant three 



