Mix 1 part vegetable glycerine to 2 parts hot tap water, using enough to make the mixture about 2 inches deep. Smash the bottom inch or two of the f stems to help them absorb the glycerine quickly. (One or two whacks with the hammer is all you need.) Place the f stems in the gl...
Fishes, mollusks, various insects, worms, and leaves of plants have also been preserved with perfect success and far better than can be done with alcohol. In the case of mollusks, especially, the preparations are very beautiful, retaining the delicate semitrans-parent appearance of the membranes ...
When the -acetone has evaporated, said cell structure will be substantially saturated with glycerine and it will also contain a substantial amount of pyroxylin, thus reinforcing the cell structure, especially adjacent the surface of the flower. The flower is thus impregnated and coated with the ...
The ratio of propylene glycol to glycerine is 3:1 -1:10. The component of vegetable origin used is propylene glycol or water-propylene glycol (with water content up to 50 wt %) extract of a plant raw material chosen from a group including linden flowers, ribwort leaves, sea-buckthorn ...
Glycerine, for example to the amount of 0.1-5 per cent, may be added before or after the acid treatment. In one form, the material after neutralization is fed to a beater b where it is beaten into a froth which passes through a spout c to a rotating endless belt d of gauze or ...