MW F1

218          THE MICROTOMIST' S VADE MECUM
attention has been called above. I think no work-table should f
be without it.                                                 cod
Clove oil darkens with age. Dark samples should be re-       Mi
jected, but so should very colourless ones, as these are gene-
rally adulterated. The proper colour is a pale sherry.
284. Oil of Bergamot. '-Schiefferdecker finds that this oil  arlk
has many good qualities; it clears 95 per cent. alcohol prepara-
tions and celloidin   preparations quickly, does not attack    g
anilin colours, but the strong odour is disagreeable, it is as  oil
dear as oil of cloves, twice as dear as oil of origanum, and Ari1
three times as dear as oil of cedar; he considers its action   at
preferable to that of oil of cloves, but, all things considered, Ch
gives the palm to cedar and origanum. I think that this is a    k1
very valuable medium, and though I do not agree with            h
Schiefferdecker in thinking its action superior to oil of cloves, of a
I think it should always be kept at hand.                      We
285. Ethereal Oils (Neelsen and Schiefferdecker's experi-    G#
ments2).-The authors examined a large series of ethereal      dla
oils (prepared by Schimmel and Comp., Leipzig), with the       ('1
object of finding a not too expensive substance that should   ohi1
combine the properties of clearing quickly alcohol _prepara-  and J
tions, not dissolving out anilin colours, clearing celloidin   in
without dissolving it, not evaporating too quickly, and not   khi
having a too disagreeable smell.                               haoo
The following is a list of twenty-four products examined     in I
by them. It seems worth while to give it, although the         sofai
authors only found three amongst the number that fulfil the    ofit
conditions; as to know that they have been found wanting in    281
some of these respects may perhaps save somebody a wild-       1oW
goose chase.                                                   Eoth
Oils of-Anise, Amber, Birch-tar, Cajeput, Calmus, Cassia,    notu6
Cedar wood, Citrons, Dill, Field-thyme, Firneedles, Mint,      with
Cumin, Niobe, Origanum, Palmarosa, Peppermint, Mentha          olii
I 'Arch. Anat. u. Pliys.,' 1882 (Anat. Abth.), p. 206.  ofik
2 Ibid., p. 204.


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