58 MASSACHUSETTS HORTICULTURAL SOCIETY. 



circulation was perfect, and it was managed with the greatest 

 ease. This was in a small house ; he thought hot water better for 

 small houses, but steam for large establishments. He would not 

 use glass less than twelve inches by sixteen, and perhaps would 

 use larger, though the larger costs higher in proportion than the 

 smaller. 



Caleb Bates said he had just come from a store, twenty-three 

 by forty-three feet in area, which was heated by a small lamp-stove 

 having two burners. It was perfectly odorless, and he thought a 

 small greenhouse could be heated well and economically also, by 

 that method. 



Mr. Philbrick said that if lamps were used, means should be 

 provided for the escape of the gas produced by combustion. 



Mr. Temple said that he had tried lamps, and they smoked if 

 too low or too high, and had a good deal of odor. Dingee & 

 Conard, the great Pennsylvania rose growers, have sixty-four 

 houses which are all heated by flues, and always have been so 

 heated, and thej' have had the greatest success in growing roses. 

 If he were going to build a small house, say fifty feet long, for a 

 general collection of plants, he would heat it with flues. The 

 advantage is that they afford a variety of temperature. 



Mr. Philbrick said that the objection to flues is their getting 

 leaky and allowing coal gas to escape, which is injurious to plants, 

 and the}' are not economical. Dingee & Conard's more than 

 sixt}' flres must require a great deal of work. Flues can be used 

 to better advantage with wood or bituminous coal than with 

 anthracite. It is difficult to grow tropical and hardy plants 

 together ; where the collection is large enough they should be 

 divided and planted in separate houses. Hardy plants cannot be 

 grown in a higTi temperature. Violets require 40° at night, carna- 

 tions from 55° to 60°, and tea roses from 60° to 65°, and by day 

 20° higher, giving air when uecessar}'. Any plant will bear more 

 heat in sunshine than in cloudy weather or at night. 



Mr. Bates spoke of the late John Washburn, of Plymouth, who 

 was ver}' successful in resuscitating valuable plants which had 

 been injured bj' injudicious culture. He would allow them to get 

 wilted in the hot sun, then water them profusely, and later he 

 would expose them to an almost freezing temperature. Mr. 

 Washburn claimed that such treatment was " the way of Nature." 



William E. Endicott was slad to hear the remarks which had 



