76 
Tracing the relative induration by age, 
we find that— i 
dst. Water cements, with common lime, 
harden quicker during the third year than 
the second. 
vd. ‘With highly hydraulic limes, acquire 
their maximum of hardness by the end of 
the second year, 
Cements made with common lime some- 
times do not fully indurate within ten 
years ;-and with such lime and sand they 
have been found soft at the end of twenty- 
five years. We should doubt whether 
such cements (if they can deserve the 
name) ever would indurate at all. 
He also concludes :— 
ist. That very fat white limes may 
form, by the assistance of water alone, 
bodies as hard as a multitude of natural 
limestones, particularly when the common 
mode of slacking is used, and when a firm 
binding consistence is given to the paste, 
and nothing opposes its shrinkage on 
drying. 
2d. That the action of the air and 
length of time increase the hardness of 
the slacked limes exposed to it. 
3d. That the hydraulic limes, particu- 
larly those that are coloured, give by the 
action ‘of the water only light and soft 
compounds. 
4th, ‘That the action of the air increases 
their hardness, but not in any degree 
equal to that which it gives to the hydrates 
of the fat limes. 
5th. That the resistances of these dif- 
ferent compounds are not at all propor- 
tional to their degrees of hardness. 
A number of interesting results have 
recently been obtained by PREvosT 
and Dumas, respecting the form of the 
globules of blood of different animals, and 
the effects of transfusing the blood of one 
animal into another. The following are 
their measures of the diameters of the 
globules :-— Of an 
Eng. inch. 
Man, Dog, Rabbit, Pig, Hedgehog, 
Guinea-pig, Muscarden .- )-97's3 
Ass . ° ° : : ‘ aT75 
Cat, Grey Mouse, White Mouse . gz'z5 
Sheep, Horse, Mule,Ox . - sod 
Chamois, Stag . . E sao 
She-goat . ° ° . » aon 
Commercial Report. 
[Aug. 1, 
But, while the globules of blood in diffe- 
rent animals vary in size, they vary also in 
form, In the ‘mammatia- they are all 
spherical, while in birds they are elliptical, 
and vary only in the lengths of their 
greater axes, They are likewise elliptical 
in all cold-blooded animals. They found 
also that the colourless globule which 
exists in the centre of the particles of 
blood, has the constant diameter of 
eho th of an inch in all avimals, and 
whatever be the form of the globule which 
contains it.—In their experiments on the 
transfusion of blood, they obtained many 
interesting results, When animals were 
bled till they fainted, they died when they 
were left alone, or when water and serum 
of blood, at the temperature of 100 Fahr. 
was injected into their veins. If, on the 
contrary, the blood of an animal of the 
same species was injected, every portion 
of the blood thrown in reanimated the ex- 
hausted animal ; and when it had received 
as much as it lost, it began to breathe 
freely, to take food, and was finally re- 
stored to perfect health. When the in- 
jected blood was from an animal of a dif- 
ferent species, but whose globuleshad the 
same form, though a different size, the 
animal was only partially relieved, and 
could seldom be kept alive for more than . 
six days, the animal heat diminishing with 
remarkable rapidity. When the blood of 
an animal with spherical globules is in- 
jected into a bird, it usually dies under 
the most violent nervous affections, as if 
under the influence of the most intense 
poison; and this takes place even when 
only a small quantity of blood has been 
lost. In a great number of cases, cats 
and rabbits were restored for some days 
by the injection of the blood of cows and 
sheep, even when the injection of the 
blood was not made till twelve, or even 
twenty-four, hours after the blood was ex- 
tracted from the latter. ‘The blood was 
kept in a fluid state in a cool place, either 
by taking away a certain quantity of 
fibrine, or adding 1000th part of caustic 
soda. When the blood of the sheep was 
injected into ducks, they died after rapid 
and strong convulsions. 
MONTHLY COMMERCIAL REPORT. 
Y areturn made to the House of 
Commons, it appears that in Essex 
there are ten banks, containing thirty- 
one names.—Cambridgeshire, seven banks, 
with twenty-two names.—Hertfordshire, 
fourteen banks, with thirty-one names.— 
Kent, thirty-one banks, with seventy- 
eight names.—Norfolk, sixteen banks, 
with fifty-seven names.—Snuffolk, seven- 
teen banks, with seventy-three names.— 
And in Yorkshire, fifty-six banks, with 
196 names, 
Imporiation of Butter from Ireland. 
In 1816--+++++++e040+520,796 Cwt. 
AG Lizare cic aiely'e'> asi ++ 280,760 
Me diBseeetsisaye “mies 305,904 
UB RO sieist sie oer e 602 P55,104 
1820 -eteeeesee ss ++ 430,003 
1,690,597 
Average 
