glycerine.
Consequently, it contains a certain quantity of mineral salts,
coloring substances, and other unknown extractive matters. Some of
these substances can be removed from it tolerably easily. The
effective substance is insoluble in absolute alcohol. It can be
precipitated by it, though not, indeed, in a pure condition, but still
combined with the other extractive matter. It is likewise insoluble in
alcohol. The coloring matter may also be removed, rendering it
possible to obtain from the extract a colorless, dry substance
containing the effective principle in a much more concentrated form
than the original glycerine solution. For application in practice this
purification of the glycerine extract offers no advantage, because the
substances so eliminated are unessential for the human organism. The
process of purification would make the cost of the remedy
unnecessarily high.
Regarding the constitution of the more effective substances, only
surmises may for the present be expressed. It appears to me to be
derivative from albuminous bodies, having a close affinity to them. It
does not belong to the group of so-called toxalbumins, because it
bears high temperatures, and in the dialyzer goes easily and quickly
through the membrane.
Pages:
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187