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Calcareous additions may be friendly to plants af- 
fefting a dry foil; but I wifh for nothing in a garden. 
of a caicareous or vitrified nature. 
3. What is the proper time of applying thofe manures? 
Does this query refer to the feafon of the year, or 
to the age and ftate of the plants? 
4. What is the proper mode of application; mixing 
them with the foil, laying them in drills, or top dreffing? 
By trenching-in, if the manure be ixcompleatly 
rotted, in order that by the next digging it may be 
in a proper ftate for an intimate mixture with the 
foil. Trenching-in is proper alfo for fowing, fome 
_ degree of warmth is excited, and it will be thoroughly 
rotted before the roots can reach it. 
5- Do thofe manures promote the growth of plants, 
by making the foil more porous and open for their roots, 
by exciting a fermentation in the foil, by affording 
nourifpment to the plant itfelf; or in what manner do 
they operate? 
The anfwer muft be matter of opinion; and it is 
“my opinion, that animal and vegetable manures are 
in a proper ftate for improving the foil on/y when 
reduced to pure earth, and that they affift vegetation, 
as in anfwer to query I. 
6. In order that manures may be ufeful, is it not 
neceffary that the foil on which they are laid, fhould 
have a confiderable degree of tenacity? 
The foil fhould have fafficient tenacity to detain 
the mantre in its compofition; but the particular 
, degree 
