APPENDIX 367 
WEIGHTS, MEASURES, AND TEMPERATURES 
As the metric system of weights and measures and the 
Centigrade appraisement of temperatures are universally 
employed in scientific works, the following tables showing 
the equivalents in our common English standards of those 
in most frequent use, are given for the convenience of 
students who have not already familiarized themselves with 
the subject. The values given are approximate only, but will 
answer for all practical purposes, except in cases where very 
great exactitude is required. The micron, or micrometer, 
is used principally by scientific investigators for measuring 
extremely minute objects seen under the microscope. 
Measures or LENGTH 
Metric Encuisoh EQuivaLENTS 
Kilometer . . .| km. 2 of a mile. 
Meter . . . ./m. 39 inches. 
Decimeter . . ./ dm. 4 inches. 
Centimeter . .j| cm. 2 of an inch. 
Millimeter. . .| mm. gs of an inch. 
Micron... . . .{ 4 zsto0 Of an inch. 
CAPACITY 
Liter. . . . 2/1 61 cubic inches, or 1 quart, U.S. measure 
Cubie centimeter | ec. zs of a cubic inch. 
WEIGHT 
Kilogram . . .|kg., or kilo. | 2$ pounds. 
15t grains avoirdupois. 
Gram... .|gm. — ‘ ; 
gs of an ounce avoirdupois. 
