368 APPENDIX 
TEMPERATURE HQUIVALENTS 
The next table gives the Fahrenheit equivalent, in round 
numbers, for every tenth degree Centigrade from absolute 
zero to the boiling point of water. To find the correspond- 
ing F. for any degree C., multiply the given C. temperature 
by nine, divide by five, and add thirty-two. Conversely, 
to change F. to C. equivalent, subtract thirty-two, multiply 
by five, and divide by nine. 
Cent. Fahr. Cent. Fahr. 
1000 3s 6 www ~ 212 Ogg se Oe Sey 82 
90: 3 ss ee a we @ OF = 10 we ek we we 4 
80 « es & =» we we © 176 -20..... - 4 
TO) we cae Se He He LS - 30..... -— 22 
60 ...... . 140 —- 4 ..... -— 40 
DON ee ee se Bw D2 = 80 24-2 ae = 68 
40 6 ew oe =e « w D04 —-100 ..... —148 
BO» a Ge ke CBO 
Oe ee Shoe Gi woe a (268 Absolute zero. 
WO ete ie eh! 50 -273 .... . —459 
