SWEET POTATO. 



193 



Analysis. — One thousand pounds of tlie roots contain: 



starch, ...... 



184.23 



Albumen, .... 



54.47 



Coagulable Albumen, 



19.40 



Casern, • . . . . 



9.70 



feugar and Jiixtract, 



53.49 



Dextrine and Gum, 



b.yo 



t iber, 



17.09 



Gum Resin, .... 



2.07 



TIT j_ 



Water, . . . . . 



641.72 — 989.10 



bilicic Acid, .... 



0.24 



Sulphuric Acid, . . . 



U.iO 



Phosphates of Lime and Magnesia, . 



. 2.78 



Lime, ..... 



.08 



Magnesia, . . . . . 



. .07 



Potash, , . . , . 



6.3 



Soda, , 



66 



Chlorine, , . . , . 



.54_10.90 



1000.00 



The above analysis was made by Prof. Emmons. Potash 

 seems to be the element most necessary to supply the soil. 

 A dressing of wood ashes would be very beneficial to this 

 crop. Next to potash it demands a supply of the phos- 

 phates. 



Culture. — The sweet potato likes a rich, sandy loam, 

 perfectly friable, and, as indicated by the analysis, abound- 

 ing in potash. The soil should be well enriched. They 

 do well on lands freshly reclaimed from the forests. 



The Spanish potatoes are generally planted where they 

 are to remain like the Irish potato, whole or cut up into 

 sets. But both these may, and the yams must be propa- 

 gated by slips, as they grow larger and yield more abun- 

 dantly. 



To raise slips select a sunny spot sheltered by fences 

 or buildings, and lay it off in beds four feet wide, with 

 9 



