APPENDIX 381 



Units of Weight. 



1 gramme = 1543235 grains = 0-035274 ounce Avoir- 



dupois. 



1 kilogram = 35 '2739 ounces, Av. = 32-1507 ounces, 



Troy = 2 '20 16 pounds Avoirdupois. 



Jnm*? ^^ 1 = 2204-621 pounds Av. = 0-9842 ton. 



1000 kilograms J 



or 



1 ounce, Avoirdupois = 28*3495 grammes. 



1 ounce, Troy = 31-1035 



1 pound, Avoirdupois = 453*593 ,, 



1 hundredweight = 50 '802 kilograms. 



1 ton = 1016-05 



On the Continent, crop yields or manurial dressings are frequently 

 expressed in kilograms per hectare ; in England, in pounds or tons per 

 acre. The following connection between the two systems may there- 

 fore be found useful : 



To convert kilograms per hectare into pounds per acre, multiply 

 by 0-89222. 



To convert pounds per acre into kilograms per hectare, multiply 

 by 1-1208. 



To convert kilograms per hectare into tons per acre, multiply by 

 0-0003984. 



To convert tons per acre into kilograms per hectare, multiply by 

 2510-9. 



To convert hectolitres per hectare into bushels per acre, multiply 

 by 1-113. 



To convert bushels per acre into hectolitres per hectare, multiply 

 by 0-899. 



THE END. 



