MISCELLANEA. 131 
duced three new greens, which are very pleasing, and which are certainly not 
liable to the objections urged against the arsenical preparations. 
“ The Ulmer Green is prepared by adding, first, sulphate of copper to a 
decoction of fustic, and then about ten per cent, of protochloride of tin. To 
this is poured an excess of caustic soda, whereupon a green precipitate falls. 
This, on being washed and dried, assumes a peculiar but pleasing blue-green 
colour. 
“ Tin-copper Green. — Fifty-nine parts of tin are heated in a crucible with 
one hundred parts of nitrate of soda. This is dissolved when cold in caustic 
alkali. The solution, being diluted with water and allowed to clear, is united 
with a solution of sulphate of copper. A reddish-yellow precipitate falls, 
which, on being washed and dried, becomes a very beautiful green. 
“ Titanium Green . — Titaniferous iron is fused with twelve times its weight 
of sulphate of potash. The fused mass is treated with hydrochloric acid, 
heated to 50° Cent, and filtered hot. The fluid is evaporated until a drop 
placed on a glass-plate solidifies. A concentrated solution of sal-ammo- 
niac is poured over the mass, which is stirred and filtered. Titanic acid 
remains behind ; this is digested with dilute hydrochloric acid, and a solution 
of prussiate of potash being added, the mixture is heated to boiling as quickly 
as possible. A green precipitate falls, which must be washed with water 
acidulated with hydrochloric acid and dried at a temperature under 100° 
Cent. The result is a beautiful dark-green powder.” 
And now we must for the present bid farewell to the reader. Our anxiety 
to allot as much space as possible in this, our first number, to correspondents 
for the insertion of instructive articles has necessarily compelled us to curtail 
our quarterly gossip on scientific events, and in so doing we trust that we 
have secured the approval of our readers, to whom we shall at all times 
endeavour to afford the greatest possible amount of interesting and instructive 
information. 
