ISBN: 9781236072054

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 322 pages. Dimensions: 9.7in. x 7.4in. x 0.7in.This historic book may have numerous typos and missing text. Pur… Mehr…

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 322 pages. Dimensions: 9.7in. x 7.4in. x 0.7in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: . . . spaces on which to record the hatch. Our experience has shown that nearly 100 per cent of the checks hatch, but there are occasional exceptions, making it desirable to have checks in all cases. The capsules can be examined under a binocular without removing them from the cards. These experiments conclude a series extending over three years which will now be ready to put in form for publication. Parasitology. --Sanitary surveys, mosquito surveys, and fly surveys have been made in Bay Point, Redwood City, Coronado City, and Atherton. Active control work has been conducted in various localities, covering periods of several days to several months. Ordinarily graduates are employed by the communities or individuals concerned. Special lectures on rural hygiene and sanitation have been given in many communities. Ordinarily the community is visited early enough in the day to permit of a careful inspection of the locality concerned. The members of the board of health, town officials, and committees are met in the afternoon and are given specific advice. The evening is devoted to a public meeting. The organization in charge does the necessary advertising, furnishes the hall and lantern if an evening lecture; otherwise enlarged photographs are used. Insecticide Work. --Because of the change in the insecticide law the work of the laboratory was changed this year by the elimination of the greater part of the routine analysis and the concentration of the attention upon important problems, the most important of which has been the completion of the study of Phenolic insecticides and fungicides, a class of substances rarely recommended by entomologists and very extensively sold as proprietary articles. A beginning was made in the revision of the methods of examination of in. . . This item ships from La Vergne,TN., RareBooksClub<