(The emulsion preparation I do not repeat, supposing that everybody is
conversant with the same.)
To an emulsion after Monckhoven's method, I add, before filtering, above
eosine solutions to 1,000 c.c. emulsion, 15 c.c. each of yellow shade and
15 c.c. of blue shade eosine; mix with a glass stirring-rod, filter, and
begin the flowing of the plates. On the contrary, to an emulsion made
after Henderson's method, double the quantity of coloring matter can be
added before flowing, without reducing the sensitiveness perceptibly.
Cyanin and eosine mixtures I give in the following proportions;
III. 0.5 grm. cyanin (iodo-cyanin) dissolved in 1,000 c.c. alcohol under
good shaking.
(All coloring matter solutions have to be filtered.)
To 1,000 c.c. Monckhoven emulsion I give: