C. were recorded by the hydrogen
thermometer. The lowest temperature obtained by allowing liquefied
carbonic oxide to vaporize was -220.5 deg. C.
* * * * *
CONVALLARIA.
By OTTO A. WALL, M.D., Ph.G.
Cnovallaria Majalis is a stemless perennial plant, found in both
the eastern and western hemispheres, with two elliptic leaves and a
one-sided raceme bearing eight or ten bell-shaped flowers. The flowers
are fragrant, and perfumes called "Lily of the Valley" are among the
popular odors.
Both leaves and flowers have been used in medicine, but the rhizome is
the part most frequently used.
[Illustration: CONVALLARIA.]
The fresh rhizome is a creeping, branching rhizome of a pale yellowish
white color, which, on drying, darkens to a straw color, or even a
brown in places. When dry it is about the thickness of a thick knitting
needle, swelling to the thickness of a quill when soaked in water. It
is of uniform thickness, except near the leaf-bearing ends, which are
thicker marked with numerous leafscars, or bare buds covered with
scales, and often having attached the tattered remains of former leaves.
Fig. A shows a portion of rhizome, natural size, and Fig.
Pages:
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165