to the Heating of Pits, S^c, 

 Observations taken at 7 a.m. during Dec. 1839 and Jan. 1840. 



On the 16th of Feb. (1840), the following vines vieve planted 

 in the house, viz. Black Hamburg, White Frontignan, Frank- 

 enthal, Royal Muscadine, Muscat of Alexandria, Black Muscat, 

 and Black Cluster. Early in April gentle heat was applied, 

 and the result already proved is very satisfactory. 



The small pit (fig. 8.) 

 which Mr. White first erect- 

 ed in his garden, and to 

 which a trial of his stove 

 was first applied, had at the 

 period of my visit a plentiful 

 crop of grapes setting well. 



The nit is I Oft lono" 5i ft. Fig- S. section mid End Elevation of Mr. IVIute's 

 I O' - Vine Pit. 



Wide, and is heated with one 



of the small patent stoves, placed at the back part of the pit inside, 

 the feeder being on the outside ; the smoke pipe is conveyed under 

 the surface of the soil from the stove to the front of the pit, as 



B 3 



