Mr, George S. Hudson 199 
apply to existing “boucans,” cheap in working 
and satisfactory in results. This statement 
does not by any means obviate my objections 
to the relative expensiveness of labour on 
‘boucans” containing a series of small trays, 
but only illustrates how to make the best of 
existing sun-drying buildings. 
Rotary Hot-arr DRYERS. 
For large estates, producing over 500 bags, 
the ‘‘Gordon” Machine Dryer (Messrs. John 
Gordon and Co., 9, New Broad _ Street, 
London, E.C.) seems to have almost a clear 
field and no competitors, although very many 
of the most intelligent planters prefer to rely 
on hot-air chambers of varying construction, 
but all embodying the same principle as the 
“Whitfield Smith” chamber, or very nearly 
approaching it. One can only imagine from 
the expensive plants of “ Gordon” Dryers one 
sees being installed on large properties at 
Grenada, Trinidad, and elsewhere, that these 
machines give satisfaction when large crops 
have to be dealt with. The plant, including 
buildings, varies in cost from £350 to over 
41,000, and is capable of treating from four to 
thirty bags of dry cacao in one charge with 
continuous working of thirty-six hours.1 The 
sample turned out is an attractive one, as a 
1In Grenada, I am told, only twenty-two to twenty- 
six hours are necessary.—H. H. S. 
