243 Descriptive Jfotice of Mr. Hogg''s 



of fruit. With that important ingredient in horticulture, liquid 

 manure, which can be withheld or applied ad libitum^ the culti- 

 vator has it in his power to produce either a strong or a weak 

 growth ; the soil is entirely under his management ; but if the 

 soil was made rich at first, its exciting quahty could not be easily 

 taken away. Mildew often strikes peach trees in green-houses, 

 and we have seen them almost white with it : it has been sup- 

 posed, by some scientific cultivators, to arise from the soil and 

 situation, and we are inclined to the same opinion. Although 

 we have not been troubled with it, nor do we believe it will 

 ever make its appearance on trees in pots, we mention it as among 

 the diseases pecuhar to the peach. It is one gratifying fact, 

 in favor of the culture of peaches in pots, that they are but little 

 subject to diseases. The facihty with which insects are destroyed 

 is also a great inducement to their cultivation. 



Though we have extended our remarks to a much greater 

 length than we at first intended, we could not well have given 

 our ideas in a much less space ; considerable may yet be said on 

 the management of the trees after the third year ; but as this 

 mostly relates to pruning, we trust the good judgment of every 

 cultivator will, with our hints on this subject, gather sufficient 

 information to guide him in his future practice. We hope our 

 observations will have a tendency to extend the growth of this^ 

 dehcious fruit in pots. We have endeavored to simpHfy their 

 culture as much as possible, in the desire we have to see every 

 gentleman place on his table a tree loaded with peaches, to be 

 plucked, fresh and ripe, from the tree. 



Art. II. Descriptive J^otice of Mr. Hogg^s new Method of 

 Heating by Hot Water. By A. J. Downing, Botanic Gar- 

 den and Nursery, Newburgh, N. Y. 



We have lately examined, with much satisfaction, a highly 

 improved furnace and boiler, for circulating hot water by the 

 level system, which is the invention of Mr. Hogg, junior, and 

 which we had the pleasure of inspecting at Mr. Hogg's garden, 

 New York. Annexed is a view of which : a, 6, (fg. 8) is a 

 strong, iron-bound, wooden cask, air-tight except through the 

 tubes /i, i, which contains the furnace, and serves as the boiler : 

 c, d, is a conical cast-iron furnace for burning anthracite coal : 



