Scientific Intelligence, Sfc. 319 



body, whether crystallized or not, appears to proceed from some angle 

 or face of the crystal. Thus, the black streaks are homogeneous 

 with the mass before it was modified to form the crystal * they are a 

 remnant of the carbon and hydrogen which had not obtained the 

 transparency when the remainder already transparent was crystal- 

 lized." 



In eight of the diamonds which he examined, Parrot observed 

 fissures or cracks in various directions, which he conceives, can only 

 be explained, by supposing them to have been first exposed to heat 

 and then suddenly cooled, and, therefore, that they have been sub- 

 jected to volcanic action. — Memoir e§ de U Academic Tmperiale de 

 St. Petersbourg, iii. 21, 6th Series, 1835. 



IX. — Statistics of the Canadas. 



According to Dr. Kelly, the diseases and deaths in Lower Canada 

 from 1820 to 1827, were as follow : fevers 2669, deaths 35 ; pneu- 

 monia 979, deaths 30 ; rheumatism 550 ; phthisis and hemoptysis 130, 

 deaths 74 ; catarrh, acute and chronic 1233, deaths 10 ; dysentery 

 and diarrhaea 1195, deaths 2; other diseases 9113, deaths 66. Total 

 diseases 15,869, deaths 217. The mean annual mortality from 1820 

 to 1831, in Lower Canada, was 1*333 per cent. In Upper Canada 

 1*253 per cent. In both Canadas from 1810 to 1822, the total number 

 of men was 99*483. Sick 114*883. Total mortality 2461 = 

 2*54 per cent. 



It appears from a census made of the country, that the number of 

 births to a marriage, in Lower Canada, is 6. The lowest rate of 

 mortality was in 1799 and 1816, being 1 in 52*72, and 1 in 54*3 

 respectively. The greatest mortality was in 1810 and 1820, or 1 in 

 33*14, and 1 in 34*5 respectively. The mean annual temperature at 

 Quebec in 1832 was 35°*87. The highest range of the thermometer 

 85°. The lowest 25°. The winds blew 220 days from the west, 

 121 from east, and 25 variously. The number of snowy days was 

 63, rainy 96, dry days 210. The mean temperature for 1832, 33 

 and 34 was 35°*87. The mean annual heat of wells situated 180 

 and 200 feet above the tide waters of the St. Lawrence was 

 42°*74.— United Service Journal, Oct., 1835. 



X. — Mode of preserving mimde Animals. 



Ehrenberg, of Berlin, has been enabled, by rapid exsiccation upon 

 small plates of mica to form a collection of nearly 300 infusorii, be- 

 longing principally to those which he has published. These objects are 

 arranged upon small plates, similar to those which are employed for 

 examining the scales of butterflies. He has preserved the form and 

 colour, not only of the armed Radiator, but also of the softest Radiator 

 and Polygastrica, even those of the genus Monades. He has also 

 preserved the tissues of plants, the spermatozoes, the different kinds 

 of blood globules with their nuclei, and the lymph, chyle and 

 nervous tubes of a great many animals. — Jour/i. de Chim. Medic. 

 i. 492 



