Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 816
WARMING AND VENTILATION. 805 … which the heated med from flowing along the particular branch But when- ever a branch is closed as at 8, it is accessary also I other en 1 / of the same branch, wise the water in the descending return pipe It, being warmer and lighter than that in the branch ■ Iat », will circulate therein, and…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
