A Practical Treatise On the Construction Heating And Ventilation of Hot Houses
A Practical Treatise On the Construction Heating And Ventilation of Hot Houses
Robert B Leuchars
The book A Practical Treatise On the Construction Heating And Ventilation of Hot Houses was written by author Robert B Leuchars Here you can read free online of A Practical Treatise On the Construction Heating And Ventilation of Hot Houses book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Practical Treatise On the Construction Heating And Ventilation of Hot Houses a good or bad book?
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The present moment affords an ocular demonstra- tion of this too common fact, Some people suppose, if they can only get mechanical contrivances to accomplish certain ends, METHODS OF VENTILATION. 281 that all is right. It is certainly desirable to employ mechan- ical contrivances, whenever they can, as in the present case, be applied advantageously. But mechanism can never make a gardener, inasmuch as the chief part of what constitutes a real gardener springs from mental, not physical, activity.... It is a very easy matter to open and shut the ventilators of a hot- house ; but it requires something more than mere mechanical power to do so with certain benefit to the inhabitants within. This will be rendered clear by a common illustration. Let a dwelling-room be warmed to a temperature of 60 ; and suppose it to be tolerably well filled with individuals, by the animal heat and respiration of whom the room by and by becomes somewhat raised in temperature, and contaminated in its atmosphere.
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