66 Scientific Intelligence. 
present, reaches its limit in about forty hours, pans pera one _ 
of invertin produces 760 parts of inverted sugar max 
rl. Chem, Ges., xi, 474, March, 1878. G. aise 
On the oecurrence of Allantoin and Hi ippuric acid in the 
Urine of the Dog.—Sa.kowskt has confirmed fully the statement 
of Meissner that both allantoin and hippuric acid occur in the 
urine of the dog. In the une Tse to dissolve the ciepeindlial 
residue of the evaporation of the urine of a dog in cold water, he 
noticed that a not inconsiderable mass npc, undissolved. By 
recrystallization from hot water, = of pure allantoin were 
obtained. The amount given was 0°8 gram from the urine of four 
days, the dog being fed on meat. The hippuric acid was detected 
in the urine of the four days’ experimented with, when hungry, when 
it reached one one hundred and same, Seosene of the urea. It was 
never entirely absent, even when no food or only purely animal 
food was given ; and the ligation seemed to be without — ce. 
—Ber. Berl. Chem. Ges., xi, 500, March, 1878. 
8. On the Coloring Matter of’ the Shells cA sie Pee aD 
brilliant and remarkably permanent color eggs of many 
birds has led LrzperMann to the ssifohesentioe "at its cause. He 
finds that however widely different these colors are from each 
other, they are due essentially to but two coloring matters, one a 
ue or green substance, ante’ a biliary. coloring — the 
other characterized by a remarkable absorption spectru ese 
coloring matters are seat in the superficial layer of | the shell, 
often in several thicknesses. When the shell is treated with 
dilute hydrochloric acid, the coloring matter separates in flocks, 
and by treatment with alcohol a strong solution may be obtained. 
With the eggs of gulls and seein an unsuccessful attempt was 
made to obtain the coloring matter pure. The colored alcoholic 
solution shows two sharp xi se tion bands, one on each side 0 
the D line, _ strongly a When alkaline, four weaker 
bands appear, none of which ae re with the firs “ ea 
— Chem. - xi, 606, April, 1 om 
neenenety in Space. — Spotulakiens on the forms “of ee 
cules and the arrangement of the atoms in space are generally as 
useless to the: scientific ; aerial as they are entertaining to their 
authors, and are therefore almost exclusively confined to fanciful 
cereers like J. G. MeVickers, D.D., LL.D., who draw from their 
maginations most beautiful and s symm of mole- 
calm tl which resemble nothing earthly unless  senapso many-angled 
ornaments made of straw or perforated card-board so common in 
re — of farmhouses. e pamphlet on “Chemistry in 
Its importance is shown by a most complimentary preface written 
