149 



The seed should be gathered on a dry day from those "Arrows" on 

 which the seed is fully ripe, which condition may be known by its begin- 

 ning to fall from the plume. 



This should be carefully noticed as the fertile seed, being heavier than 

 the unfertilized awns will fall first. 



It is therefore useless to gather seed from those arrows which have 

 already shed the greater portion of their down. 



The seed should be put m a dry bag and at once forwarded. 



I appeal to planters to assist me in this effort as the value of seedling 

 canes has now been fully proved, and we desire to raise others from home- 

 grown seed. 



The bags should be labelled with the name of the cane from which it 



was gathered. 



J. H. HART. 

 16th December, 1895. 



182.-WATER MEASURES AND RAINFALL. 



(Cape Agricultural Journal.) 

 In connection with various operations in practical farming, con- 

 servation of water, rainfall and irrigation, the following measures and 

 quantities may be found useful. 



Water Measure. 



1 Imperial gallon of pure water weighs 10 lbs. 

 1 American or colonial gallon Aveighs 8|- lbs. 

 1 Imperial gallon contains 277*274 cubic inches. 

 1 American or colonial gallon 231 cubic inches. 



5 Imperial gallons equal 6 Cape gallons, 



1 cubic foot contains nearly 6^ Imperial gallons (6"23;. 



1 cubic foot of water weighs 62|- lbs. (G2"212). 



1 cubic yard contains 168f gallons. 



1 Imperial pint of water weighs 1:^ lbs. 



1 Imperial pint contains 20 fluid ounces. 



6 wine bottles are reckoned to contain one gallon of water or 26| 



ounces each. 



Rainfall and Irrigation. 



1 inch of rain is 144 cubic inches to a square foot. 

 1 ,, 1,29G ,, or 4^ gallons to square yard. 



1 ,, 22,G22 gallons to acre, 4,840 square yards. 



1 „ 113 tons of 2,000 lbs. to the acre. 



1 „ 14^ million gallons to square mile. 



