. A text-book of bacteriology, including the etiology and prevention of infective diseases and a short account of yeasts, and moulds, haematazoa, and psorosperms. Bacteriology. 116 BACTERIOLOGY. receiver, and steamed in the steam steriliser for twenty minutes to half an hour, the time varying according to the size of the potatoes. When cooked, the potato-receiver is withdrawn and left to cool, the potatoes being retained in it until required for use. Damp chambers are prepared ready for the potatoes, the vessels being cleansed and washed with carbolic as described for plate- cultivations. Smal
. A text-book of bacteriology, including the etiology and prevention of infective diseases and a short account of yeasts, and moulds, haematazoa, and psorosperms. Bacteriology. 116 BACTERIOLOGY. receiver, and steamed in the steam steriliser for twenty minutes to half an hour, the time varying according to the size of the potatoes. When cooked, the potato-receiver is withdrawn and left to cool, the potatoes being retained in it until required for use. Damp chambers are prepared ready for the potatoes, the vessels being cleansed and washed with carbolic as described for plate- cultivations. Small glass dishes of the same pattern as the large ones may be employed for single halves of potatoes. Potato-knives and scalpels, which have been sterilised in an iron box by heating them in the hot-air steriHser at 151° 0. for one hour, should be ready to hand. Knives steriHsed by heating them in the flame of a Bunsen burner should afterwards be placed upon a steriHsed glass plate and covered with a bell-glass. It miist not be Fio. 45.—Box FOR Sterilising Instruments. however, that heating the blades in the flame destroys the temper of the steel, and therefore knives and other instruments should preferably be sterilised in the hot-air steriliser, enclosed in an iron box, or simply enveloped in cotton-wool. Inoculation of Potatoes.—The coat-sleeves should be turned back, and the hands, after thorough washing with good lathering soap, be dipped in 1 in 40 carbolic. An assistant opens the potato- receiver, and a potato is selected and held between the thumb and index linger of the left hand. With the knife held in the right hand, the potato is almost completely divided in the direction which will give the lai-gest surface. The assistant raises the cover of the damp chamber, and the potato is introduced, and while the knife is withdrawn, allowed to fall apart. The cover is quickly replaced, and another potato treated in the same way, is placed in the same damp chamb
Size: 3165px × 790px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1897
