A practical treatise on gas and ventilation : with special relation to illuminating, heating, and cooking by gas : including scientific helps to engineer-students and others / by E. E. Perkins.

  • Perkins, E. E.
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: A practical treatise on gas and ventilation : with special relation to illuminating, heating, and cooking by gas : including scientific helps to engineer-students and others / by E. E. Perkins. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    bells, reflectors, and ceiling hooks, shields on; that the meter is properly placed and fixed square—properly charged with water; the index correctly registered for starting, and then the whole honestly tested by the pump. It is just as necessary to take into consideration the dimensions of the rooms, their relative situations, as respects the ac- cess of daylight and the uses to which they are applied, as it is, in the erection of a house, to determine upon the number, di- mensions, and situations of the doors, win- dows, and fireplaces; for it is too frequent- ly the practice to sacrifice utility and com- fort to appearances, placing a certain num- ber of gas-burners against walls or suspend- ing them from the ceiling of a room, with- out estimating beforehand the quantity of light they will produce, or adopting any plan for getting rid of the heat. When gas is consumed under the most favourable con- ditions, the heat generated is very nearly in equal proportions with the light obtained;