_Queries on the Albumenized Process._--Allow me to put a few questions
through your valued paper.
In the albumen process on glass, Messrs. Ross and Thomson, in
Thornthwaite's _Guide_, recommend 10 drops of sat. solution of iodized
potassa to each egg. Now is it meant _ten drops_, or _ten minims_? If the
former, a drop varies with the bottle and quantity of liquid in it; and ten
drops are nearly half the bulk of ten minims, generally speaking. Then as
to the egg: an egg in this country is only at most 6 [drachm]; in England
an egg appears twice as large.--Could you state the general bulk of an egg
in England, and to what quantity by bulk or weight of albumen the 10 drops
or minims are to be applied? When I say an egg is only 6 [drachm], I mean
the white of one.