
56 MATERIALS FOR PREPARING SKINS. 
their applicability, are:— calcined magnesia (very good, but 
too light —it floats in the air, and makes you cough) ; bicar- 
bonate of magnesia; powdered chalk (‘‘ prepared chalk,” creta 
preparata of the drug shops is the best kind); fine wood- 
ashes; clean dry loam. No article, however powdery when 
dry, that contains a glutinous principle, as for instance gum 
arabic or flour, is admissible. d. For wrapping, you want a 
thin, pliable, strong paper; water-closet paper is the very best ; 
newspaper is pretty good. For making the cones or cylinders 
in which birdskins may be set to dry, a stiffer article is re- 
quired ; writing paper answers perfectly. 
§33. INDEPENDENT PARAGRAPH. Naturalists habitually carry 
a pocket lens, much as other people do a watch. You will find 
a magnifying glass very convenient in your search for the sex- 
ual organs of small birds when obscure, as they frequently are, 
out of the breeding season; in picking lice from plumage, to 
send to your entomological friend, who will very likely pro- 
nounce them to be of a ‘‘new species ;” and for other purposes. 
$34. Fixtures. When travelling, your fixtures must ordi- 
narily be limited to a collecting-chest ; you will have to skin 
birds on the top of this, on the tail-board of a wagon, or on 
your lap, as the case may be. The chest should be very sub- 
stantial — iron-bound is best; strong as to hinges and lock— 
and have handles. A good size is 30X18X18 inches. Let it 
be fitted with a set of trays; the bottom one say four inches 
deep ; the rest shallower; the top one very shallow, and divi- 
ded into compartments for your tools and materials, unless 
you fix these on the under side of the lid. Start out with 
all the trays full of cotton or tow. At home, have a room to 
yourself, if possible; taxidermy makes a mess to which your 
wife may object, and arsenic must not come in the way of chil 
dren. At any rate have your own table. I prefer plain deal 
that may be scrubbed when required ; great cleanliness is indis- 
pensable, especially when doing much work in hot weather, for 
the place soon smells sour if neglected. Juse no special re- 
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