292 Scientific Intelligence. 
- The quantity of bicarbonates in the urine depends upon the amount 
of pleat or salts of vegetable — —— in the foo he sev- 
pier ase used as rations in these riments gave, by incineration 
muffte, oe —— the silloniang quantities of carbonic aeid to 
100 not dry substa 
Cl weit ay, ‘ i - 24 pts. ©0, 
Bean-straw, - ° we F 16 
Meadow-hay, - -~— = 5 pepo! as é 
Oat-straw, = - : iy é 02 « “ 
Wheat-st - - w sega? a ‘“ 
Crushed beans, - i Oo « “ 
In the urine, the greatest amount of carbonic acid—1°6 to 1°8 per cent— 
was observed after feeding with clover-hay. In urine excreted after the 
ingestion of nlaeorsetgn and crushed beans, carbonic acid was totally 
wanting. The urine from cattle fed on wheat-straw had an acid reaction 
instance the reaction was alkaline. By adding to the day’s ration of 
straw 75 grms. acetate of potash, the carbonic acid and the alkaline re- 
action reappeared. od. 
n some points in the composition of Soils.—It has been assumed 
by chemists that hydrated oxyd of iron and hydrated alumina as well 
as Roe Gites i hdd usual, ingredients of soils, though no direct proat 
of the een furnished. LEXANDED Motuszr (Die / 
wirthschafllichen Versizhe Stationes iv, p. 227) has examined various 
seignette salt when boiled with hydrated sesquioxyd of iron dissolves 
the latter, gem’ a dark-brown alkaline solution, ‘The hydrated sesqiti- 
one does not lose its nag A ode air- dae nor We ee at = mee ’ 
e di 
which ess a Saoutle ocher-yellow re Red soils, and also : 
having a light color, yield little iron to a mpared to that whie 
tain hydrated sesquioxyd, the red, ee ous sesquioxyd, a 
colored soils appear to contain a silicate on. a 
Hydrated alumina ria scarcely fond at all. He supposes th 
alumina exists in nearly all cases as a silica ‘th 
By digestin Ade aye’, soils of the slctates of Stockholm directly ¥" id, 
solution of carbo te of soda, or by treatment with chlorohydrie it 
ort very little silica is is taken up. On the other hand, the residue that 
ns after — g on them with en al acid yields much ner id 
en 15 percent. It hen eo that in the soil the 
pe for the. mos part in a state of combina of the 
Note—tThere can be little doubt that the. “iydiows silicates of th? 
various bases occurring in the soil—or its zeolitic constituents #5 they 
