from our tables, that A muft be 35 years of age$ 
therefore find, by the twenty-third propofition, the 
value of an annuity of a life for 3 5 to continue for 
a limited time of 3 1 years : let that value be fub- 
dufted from the value of an annuity certain, to con- 
tinue 31 years i and the remainder will be the value 
of the reverfion. 
XL Fhe Appearance of a fiery Meteor, as fieen 
by Mr. Cradock, communicated to the Royal 
Society by Mr. Henry Baker, F. R. S. 
Read June a >HE Head and Body emitted an ex- 
1?44 ' tremely lucid and white Flame. 
The Tail appeared of a tranfparent Blue, like the 
Flame of Sulphur. 
This Thcenomenon was feen on Sunday, May 27. 
1744. at 1 1 Minutes after 11 o’Clock at Night: Its 
Dirc&ion from S. E. to N. IV. or thereabouts ; its 
Height fcemingly not half a Mile. 
It was feen, as here deferibed, from the Terrace 
in Somerfet-Gardens, by me, 
Zach. Cradock, 
Of Somerfet-Houfe. 
