A Text Book of Physiology Volume 1

A Text Book of Physiology Volume 1

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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. 1888 edition. Excerpt: ... (19) Two sheets of blotting paper, a cork plate, large and small gummed can!s, soft linen rags, a towel. (20) A large earthenware pot for refuse..'?. Reagents.--It is not advisable to keep reagents in store in too great quantities, for many of them become decomposed in a comparatively short time. Reagents must bo procured shortly before use. Every flask must be provided with a large label indicating its contents. It is recommended that not only should the prescription of the particular fluid be indicated on the label, but also the method of employing it. All the flasks should be closed tightly with corks or with good glass stoppers. The fluid must not reach to the under surface of the cork. (1) Distilled water, 3-6 litres. (2) Solution of common salt, 0'75 per cent.: distilled water, 200 c.cm.; common salt, 15 grms. The cork of the flask must be provided with a glass rod reaching down to the bottom of the flask. The liquid decomposes readily, and must be frequently prepared anew. (3) Alcohol--(a) Absolute alcohol. Of this, it is necessary to have 200 c.cm. in readiness. The absolute alcohol of commerce is of the strength of 96 per cent., and it is, in the majority of cases, at once available for microscopic purposes. If, however, anyone wishes to preserve in alcohol completely free of water, he must throw into the flask some small pieces (15 grms. to 100 c.cm. of alcohol) of dried sulphate of copper (CuS04) that has been heated to a white heat. In the event of its turning blue, it must either give place to a fresh supply, or be burned anew. Newly burnt chalk likewise serves a like purpose, only its operation is more protracted, (h) Pure spirit (strength, 90 per cent, of alcohol), 3-5 litres; may be called 90 per cent, alcohol, (c) 70 per cent, ...show more

Product details

  • 12-17
  • Paperback | 212 pages
  • 189 x 246 x 11mm | 386g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236583353
  • 9781236583352