RAISING APPLE-TREES FROM SEED. 
195 
remains open, there will be a current, the pressure instead of dimi¬ 
nishing, becoming only increased in proportion to the reduction of 
the apertures. It will always require considerable caution in open¬ 
ing doors, front sashes, or any other part of the house for air, parti¬ 
cularly in the early part of the spring, when there is so material a 
difference betwixt the external and internal air. 
One great objection to houses with quadrant roofs, is, that when 
the cold air is introduced through the front, and the heat passes 
through the back wall, there is a direct line betwixt the front and 
back ventilators, the heated air in a portion of the curve of the roof 
is therefore never displaced, and, as a natural consequence, the foli¬ 
age is often destroyed by the action of thesun on the condensed va¬ 
pours. To give exact directions upon this subject, appears almost 
impossible; every different formed house, will require some degree 
of different treatment in ventilation. I have therefore only ex¬ 
plained, and pointed the necessity of preventing currents of air pas¬ 
sing through houses devoted to the culture of fruits, for by admit¬ 
ting it from the roof, many injurious effects are entirely avoided. 
Many persons make a practice of throwing open the doors to give 
the first air in the morning; this system I condemn, and should re¬ 
commend to be avoided. The first air should always be admitted 
through the top lights, in small portions at first, and afterwards in¬ 
creased as occasion requires. 
George Stafford. 
Willersley , March 1 Ith, 1833. 
ARTICLE II. 
ON RAISING APPLE TREES FROM SEED. 
BY J. C. K. 
The following remarks which I have here strung together, I would 
by no means be understood to put forth as a full reply to your cor¬ 
respondent “ N. S.” page 89, and am far from wishing that they 
should prevent the communications of other contributors, many of 
whom, without doubt, have it in their power to impart much more 
valuable information on the subject, but I would offer them as hints, 
towards supplying the information, of which he is desirous. 
First then as to the seeds.—Unquestionably the best time to sow 
them is the autumn, immediately after they have been taken from 
•' V 
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