212 MANURES FOR OTHER TREES 



Hoveas are best treated with silver sand, bone 

 manures, and kainit ; and on the surface of tbe soil 

 a few crystals of iron sulphate greatly increase 

 the blooms by engendering a more vigorous and 

 healthier growth. 



Hypericums are improved by being watered 

 with a manure containing 3 ozs. of lime super- 

 phosphate, 1 oz. each of kainit and magnesium 

 sulphate, |- oz. of siHcate of soda, and -g- oz. of 

 iron sulphate to 2 gallons of water. 



Idesias are benefited by using a manure con- 

 taining bones, kainit, and iron sulphate. 



Ilex is benefited by watering it occasionally 

 with a liquid manure containing 1 oz. each of 

 lime superphosphate, magnesium sulphate, kainit, 

 silicate of soda, and nitrate of soda, and ^ oz. of 

 iron sulphate to 2 gallons of water. 



Illiciums are improved by applying bone 

 phosphate or guano, kainit, or iron sulphate. 



India-rubber Trees are benefited by being 

 watered with a solution containing |- oz. each of 

 lime superphosphate, iron sulphate, and nitrate of 

 potash to 2 gallons of water. Iron sulphate is 

 a most valuable manure for the growth of india- 

 rubber trees.-' 



' A. B. Griffiths, Journal of the Chemical Society, 1887, p. 221. 



