Identifier: milkitsrelationt00unit (find matches)
Title: Milk and its relation to the public health
Year: 1912 (1910s)
Authors: United States. National Institute of Health. (from old catalog)
Subjects: Milk Public health
Publisher: Washington, Govt. print. off.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
was found most satisfactory,and which was most used consists of a light wooden box, 14 incheshigh, 7J inches deep and 5^ inches wide, outside measurements(Fig. 61). This box is divided into 2 sections of unequal depthhinged together. The shallower section is 2\ inches deep inside, andis divided into compartments for holding a square can of alcohol, andfor test tubes of culture media and empty sterilized test tubes for col-lecting samples of water. The deeper section measures 13J inches inheight, by 4J inches in depth and 4; inches in width, and is divided 45276°—Bull. 56—12 38 594 into compartments for Petri dishes and for an alcohol lamp and a tincan for use in melting the media. As will be seen in the figure,provision for holding the Petri dishes in the compartment consists ofa vertical strip of wood on either side of the compartment. Thesestrips do not extend up quite to the top, but stop 1 inch short, so asto allow for slipping the dishes in in a horizontal position while the
Text Appearing After Image:
Fig. 61.—Field kit. agar is not yet firmly set. The compartment for the alcohol lampbelow that for the Petri dishes needs no special description. Clipsmade of a clock spring serve to hold the pipettes, and these clips andthe 2 cups for holding the ends of the pipettes at the bottom may beseen at each side of the compartments for the lamp and the Petridishes. The compartments for the test tubes and extra supply of 595 alcohol will be noticed in the illustration. The door which closes thecompartment for the test tubes is hinged so as to open downward,and is kept from falling entirely open by a thin metal stop on eitherside. The lamp (Fig.62) perhaps deserves a few words of descrip-tion. It is a vapor lamp of the kind which may be bought in anyhardware shop. But it was fitted with a gauze cylinder resting onthe burner, and a thin sheet-tin chimney, which add greatly tothe heating power, and the tin cylinder also protects the flamefrom the wind. It also served the further purpose of a s

Note About Images