1907.] 



PUBLIC DOCUMENT — No. 33. 



195 



is grown on what Dr. Whitney terms " Connecticut meadow " 

 and ^^ Podimk fine, sandy loam ; " and we cannot say whether 

 onions require, for their best development, soil differing very 

 materially in texture from that required for tobacco. 



Table IV. — The Mechanical Analyses of Some Tobacco and Onion 



Soils. 



There is no greenhouse specialty which requires so much 

 skill as the growing of roses, and the magnificent specimens 

 which may be found in the markets at almost any season 

 of the year surpass all other greenhouse products in beauty 

 and perfection. There is no plant which requires so heavily 

 manured a soil as the rose. The customary formula for 

 mixing such a soil is one-third finely pulverized sod, one- 

 third loam and one-third cow manure. In addition to this, 

 some form of commercial fertilizer is occasionally applied. 

 Watering the plants with a strong decoction of cow manure is 

 frequently practised. 



It is highly impracticable to use a soil of this nature for 

 two consecutive seasons, since, owing to its high state of 

 fertilization and the subsequent chemical changes which take 

 place in the soil, a toxic effect is produced upon the plants. 

 No class of greenhouse specialists is more particular about 



