. A manual of veterinary hygiene. Veterinary hygiene. 78 YETEEINAEY HYGIENE enough and close enough to prevent rain drifting through; the angle these boards are placed at is of far less importance than their -width. As a means of ventilation the ridge is excellent; as it is desirable extraction should always take place at the roof, fixed cowls on the ridge would be better than louvre boards for small but not for large stables, as with the latter a sufficient number could not be employed. The strong argument in favour of the open ridge with. M i L -aj \i _ J Fig. 20.—Ventilating stable pillar o
. A manual of veterinary hygiene. Veterinary hygiene. 78 YETEEINAEY HYGIENE enough and close enough to prevent rain drifting through; the angle these boards are placed at is of far less importance than their -width. As a means of ventilation the ridge is excellent; as it is desirable extraction should always take place at the roof, fixed cowls on the ridge would be better than louvre boards for small but not for large stables, as with the latter a sufficient number could not be employed. The strong argument in favour of the open ridge with. M i L -aj \i _ J Fig. 20.—Ventilating stable pillar on the principle of a Tobin's tube. louvre boards is that it cannot be closed, and this in the case of large stables may be a great advantage, for even if all doors and windows are shut the ridge both admits and discharges air (Fig. 10, p. 72), and this it could not do if only fixed extraction cowls existed. The relative size of inlets and outlets has been much dis- cussed. It has been said that the outgoing air being lighter, and thus occupying more space, the outlets should be larger than the inlets; as a cubic foot of air only expands tV of its bulk for 30° Fahr., it is obvious Digitized by Microsoft®. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smith, Frederick 1857-1929. New York : W. R. Jenkins
Size: 1758px × 1422px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkwrjenkins
