204 
Scientific Intelligence . 
46. Population of Russia , and Instances of Longevity. — In 
the year 1817, the number of births in Russia is stated at 
786,810 boys, and 711,796 girls; the number of deaths at 
423,092 males, and 405,469 females, of whom 208,954 died 
under five years of age. The increase of population was 
670,045. The number of individuals who had attaiiied the 
age of 
60 years, was 
68,723 
70 ... 
38,764 
80 ... 
16,175 
90 ... 
, . 2,108 
100 ... 
783 
115 ... 
. 83 
120 
. 51 
125 ... 
. 21 
130 : 
7 
135 ... 
1 
HO ... 
1 
Total, 126,717 
which is about a seventh part of the deaths. 
47. Cases of recovery from Suspended Animation. — In the 
year 1820, no fewer than 260 persons were submerged in the 
Seine at Paris, only 70 of which were accidental. Of these 62 
were taken out and restored to life. But out of the whole 260, 
there were only 86 who had remained less than twelve hours 
under water. Hence out of the number of persons who could 
be expected to recover, the ratio was as 60 to 86, or as 5 to 7 
nearly. A set of Newfoundland dogs is now trained for the 
purpose of diving for persons submerged in the Seine, and res- 
cuing those who are in danger of being drowned. 
48. Fermenting Pond in Massachusets. — A remarkable pond 
has been lately observed in Sharon, Massachusets, known by the 
name of Mash-Bog Pond, from which great quantities of lenti- 
cular argillaceous oxide of iron and cake-ore are procured. 
From about the middle of August to some time in September, 
this pond presents the singular appearance of working or fer- 
menting as beer does when new. — Sillim.an’s Journal , vol. v. 
p. 199. 
49- Singular cases of the effects qf'Nitrous Oxide. — The follow- 
ing very remarkable cases of the effects of nitrous oxide occur- 
red among Professor Sillimaifs students, at Yale College. A 
