. Injurious insects of the orchard, vineyard, field, garden, conservatory, household, storehouse, domestic animals, etc., with remedies for their extermination . 38 INTRODUCTORY. Fig. 3 is an illustration of a new improved pump, manu-factured by H. P. Gregory & Co., of San Francisco. This is Fig. certainly the best pump for spraying trees that has beenoffered for sale. It is stronger made than most pumps, thusgiving more power. There are only two joints where it wouldbe possible for the liquid to leak out, and these, if properlyscrewed up, are perfectly tight. The air chamber is very large
. Injurious insects of the orchard, vineyard, field, garden, conservatory, household, storehouse, domestic animals, etc., with remedies for their extermination . 38 INTRODUCTORY. Fig. 3 is an illustration of a new improved pump, manu-factured by H. P. Gregory & Co., of San Francisco. This is Fig. certainly the best pump for spraying trees that has beenoffered for sale. It is stronger made than most pumps, thusgiving more power. There are only two joints where it wouldbe possible for the liquid to leak out, and these, if properlyscrewed up, are perfectly tight. The air chamber is very largein proportion to the size of the pump, thereby giving anexceedingly steady spra3^ The cylinders are lined with brass,and the valves are made of the same m^tal as the body of thepump, including the handle. The outer parts are galvanized,thus preventing them from rusting, so that it will preserve thesame neat appearance that it has when new. This pump was designed by H. P. Gregory, of the abovefirm, and is certainly a great improvement. INTliODUCTORY 39 Fig. 5
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