CALENDAR FOR APRlt. 
79 
F. Thompson. —We have repeatedly expressed our opinion that Guano 
is not suited to pot cultivation : it is too strong, and even when reduced is a 
dangerous plaything; use good fresh earths, and you will not need it, or it 
you must have artificial manures try bone-dust or charcoal. 
LITERARY NOTICE. 
Theory and Practice applied to the Cultivation of the Cucumber in 
the Winter Season. A treatise by Mr. T. Moore, of the 
Royal Botanic Gardens, Regent’s Park, pp. 60. London, 
Groombridge. 
This subject has engaged the attention of many writers, and 
has been given to the public in various forms, but never yet in a 
manner we could so cordially approve as the present. 
The prevailing fault, in works of this description, is an empi¬ 
rical ordering of the detail, making success to depend entirely 
on mere manual operations; or a sort of attempt to arrive at 
effects without considering the causes. Now, for a man to un¬ 
derstand a subject thoroughly, so as to have a reason for all he 
does, it is requisite that he should be able to trace all results, 
whether of good culture or failure, to the causes from which 
they arise; and to impart this knowledge is the groundwork of 
the treatise before us, in which Mr. Moore has very clearly 
shown the necessity of studying the theory, to insure the desired 
results in practice. The work contains much information under 
the several headings; viz. Structures, Propagation, General 
Principles of Culture, Soil, Application of Water, Temperature, 
Admission of Air, &c., and a chapter on Persian Melons. A 
very neat engraving of a cucumber house is given in illustration 
of the chapter on Structures, which possesses much original 
merit. 
The matter is very ably and modestly written, and is espe¬ 
cially addressed to young gardeners ; but we do not hesitate to 
say it should be read by all. 
CALENDAR FOR APRIL. 
Stove. It is probable that the remarks made last month 
will, in many cases, be still applicable; for the re-potting of 
