190 Scientific Intelligence. 
1400 had twins, and 27 had triplets. In Paris, the poor district pro- 
duces more children than the rich, in the proportion of 32 to 26, but 
when there are fifty deaths in the rich arrondisement, there are one 
hundred in the poor one. The number of illegitimate children is 
immense, and seven out of nine are abandoned by their parents, and 
of these, one half perish in the first year of their existence. Dupin 
has ascertained that one half of the deaths in Paris, take place in 
the hospitals and other asylums of charity. Not a fourth part of 
the inhabitants are buried at private cost. It appears from the sta- 
tistics of Prague, that neither bachelor nor spinster, has for an aver- 
age, of several years, exceeded the age of ninty-five, whereas sev- 
eral married persons have lived to see one hundred and fifteen. At 
New York, the mortality of the whites, on an average of the seven 
years, from 1820 to 1826,is 1 in 40. Among the blacks, on the 
same average, 1 in 19. At Philadelphia, the whites, 1 in 34; the 
blacks, on the same oats 1 in 19. At Baltimore, the ee 1 
in 33, and the whites 1 in 3 
In 1750 at the British Lyingn Hospital, one woman died out of 
forty-two 5 i in 1780, one died in sixty; and at the city of London 
Hospital, in 1826, the deaths were only 1 in 70. At the Dublin 
Lying-in Hospital, the most magnificent institution of the kind in the 
world, the proportion of women dying in child-bed, on an average 
of seventy years, has been but 1 in 89. At Stockholm and at Paris 
m 1822, the deaths at the Lying-in Hospital, were 1 in 29. At 
Berlin, between 1807 and 1817, one case was fatal, out of oe 
five. ‘The mortality had then been once as high as 1 in 32.—. 
Quar. Jour. of Sci. April to June, 1829. 
~ 2. Urinary Calculi. (NVancttrcsciichs Abhand, v. e. Gessellsch in 
Wurt.)—M. Rapp, having analysed eighty one urinary calculi, which 
he had obtained in different parts of the kingdom of Wirtemberg, has 
obtained the following results -— 
ns Calculi, with oxalate of lime, (almost always with a nucleus of 
acid,) 
Calcul, formed by oxalate of lime alone, - 22 
_ Oxalate of lime, with an exterior fusible coat (of ammoniaco- 
magnesian phosphate, - 28 
Seve ctaee covered with a thick coat of uric acid, - . 
_ Oxalate of lime mixed with a considerable quantity of uric acid, 
Satan external characters are no longer distinguishable, 
