USEFUL TABLES. 



471 



Useful Data. 



The gallon weighs 10 Ibs. (of distilled water at 62 F.). 



The litre weighs 1,000 grammes (of distilled water at C.). 



1 gallon = 4 litres approximately. 



1 barn gallon = 10 



1 kilogramme = 2- Ibs. approximately. 



1 hundredweight = 50 kilogrammes approximately. 



1 cubic foot = 6-24 gallons. 



Note. The metre and litre compared with the standard English 

 measures are those defined by the Act of 1878, and are not the true 

 metre and litre. The difference is due to the fact that the English 

 measures refer to a temperature of 62 F., and the metric measures to 

 a temperature of C. In the Weights and Measures Act of 1878 the 

 difference of temperature has not been allowed for. 



TABLE CLXIII. 



The following table shows the comparison between the two systems : 



TABLE CLXIV. BARN GALLONS AND IMPERIAL GALLONS. 

 For the Conversion of Barn Gallons into Imperial Gallons. 



