1888.] PUBLIC DOCUMENT — No. 33. 31 



The average amount of dry matter in well grown carrots 

 is usually stated (E. Wolff) to be 15 per cent, of the weight 

 of the fresh root ; in oiw case it varied from 9 to 12 per 

 cent., according to the size of the root tested. Large speci- 

 mens of roots contain frequently a smaller amount of dry 

 vegetable matter than smaller ones equally matured. Cul- 

 tivation, manuring, season and time of seeding, aside from 

 fitness of the soil, affect seriously the general character of 

 the root crops. Li our case, soil and state of fertilization 

 were favorable, — frequent rains towards the close of the 

 summer season had favored apparently in an exceptional 

 degree the growth of the leaves at the expense of a timely 

 maturino- of the roots. 



Analysis of Carrots loith reference to Fertilizing Constituents. 



Per cent. 



Moisture at 100° C, 90.02 



Ferric oxide, 0.01 



Phosphoric acid (6 cents per pound) , 0.10 



Magnesium oxide, 0.02 



Calcium oxide, 0.07 



Potassium oxide (4| cents per pound), 0.54 



Sodium oxide, 0.11 



Nitrogen (17 cents per pound), 0.14 



Insoluble matter, 0.01 



. Valuation per 2,000 pounds, . • ^1 06 



