Note 13 — Chapter VIII · PROTECTION AGAINST EXTREMES OF HEAT AND COLD, SUDDEN AND SEVERE CHANGES OF TEMPERATURE, AND DAMPNESS IN THE HIVES.
Reading edition
The cost of the glass for one hive so as to give the air space all around, if purchased at the wholesale prices will not exceed 25 cts. Where three hives are made in one structure, the glass for the three will cost less than 50 cents; if double glass is not used, the expense would be less by one half.