, see p. 203, vol. 30.--W.C.L. will
find directions for preserving eggs on p. 306, vol. 34.--R.M.G. will
find a recipe for root beer on p. 138, vol. 31.--W.F.H.'s plan for a
refrigerator might answer. See p. 251, vol. 31.--J.C. can remove the
wool from pelts by steeping the skins in water, and hanging them up
till the wool putrifies. Then scrape with a blunt knife. For cleansing
wool, see p. 6, vol. 32.--W.H.J. will find a recipe for a cement for
marble on p. 344, vol. 32.--T.B. can gild his steel scabbard by
following the directions given on p. 106, vol. 34.--A.H.B., J.A.C.,
W.H.H., J.F.P., D.S., J.N.H., J.P., F.F., M.N., M.C., R.C., K.S.W.,
T.J., and others, who ask us to recommend books on industrial and
scientific subjects, should address the booksellers who advertise in
our columns, all of whom are trustworthy firms, for catalogues
(1) R.H.C. says: We have a slate roof which leaks very much. I have
not discovered any defect in the way in which it was put on; it
appears to be perfect. The pitch may be too low, and the rain may be
driven through by the wind on this account. Is there any wash, paint,
or cement that might be used for the purpose of remedying this defect?
A.
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