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. 1915 Excerpt: ...used by D. Hofer. Fifty parts of a saturated watery solution of picric acid, are mixed with 48 parts of water, and 2 parts of glacial acetic acid. The mixture acts first upon the edges of the specimen and works inwards very rapidly, but it is sometimes unable to penetrate to the two surfaces touching the glass. In that ...
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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. 1915 Excerpt: ...used by D. Hofer. Fifty parts of a saturated watery solution of picric acid, are mixed with 48 parts of water, and 2 parts of glacial acetic acid. The mixture acts first upon the edges of the specimen and works inwards very rapidly, but it is sometimes unable to penetrate to the two surfaces touching the glass. In that case, the unaffected parts will remain transparent while the edges will be yellow and opaque. The defect may be remedied by gently raising the cover-glass and allowing it to fall back again into place. It may, however, be necessary to add: fresh liquid, after quickly removing what is left of the original application; this manoeuvre should be repeated until the entire worm becomes opaque. It must be borne in mind that the lifting of the cover-glass is very liable to tear the specimen, especially when the preparation has been subjected to pressure. Should this appear imminent, the cover-glass should be allowed to fall back into place and fresh liquid must be added At the edge of the glass until the cover-glass floats, either quite free or with the worm attached. In either case the specimen will be left exposed, either upon the glass slide or the cover-glass, and the process of fixing may be completed by adding fresh fluid. Or the worm may be freed from the glass by pouring the Hofer mixture over it; it should then be transferred to a watch-glass by means of a fine brush. If the object is fixed upon the glass slide, as soon as it becomes opaque it should be washed off into a watch-glass, and it should, in any case, be allowed to remain for a short time in the fixing fluid. The fluid is then removed by means of a pipette and clean water is added. This is quickly drawn off and replaced by 45 to 50 per cent, alcohol. The object should remain for a ...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
