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. JVot 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 average, 1 in 19. At Baltimore, tlie blacks 1 

 in 33, and the whites 1 in 39. 



In 1750 at the British Lying-in Hospital, one woman died out of 

 forty-two; 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 

 in 1822, the deaths at the Lying-in Hospital, were 1 in 29. At 

 Berlin, between 1807 and 1817, one case was fatal, out of forty- 

 five. The mortality had then been once as high as 1 in 32. — Lon. 

 Quar. Jour, of Sci. April to June, 1829. 



2. Urinary Calculi. (Naturwissench 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 : — 



1. Calculi, with oxalate of lime, (almost always with a nucleus of 

 uric acid,) 



Calculi, formed by oxalate of lime alone, - - 22 



Oxalate of lime, with an exterior fusible coat (of ammoniaco- 



magnesian phosphate,) - - - - 28 



Oxalate of lime, covered with a thick coat of uric acid, - 3 



Oxalate of lime mixed with a considerable quantity of uric acid, 



so that their external characters are no longer distinguishable, 3 



