152 BOOKS AND CURRENT LITERATURE 



whose skins are removed will sprout even in dry storage much earlier 

 than those whose skins are intact. 



Since respiration in stored potatoes becomes very weak just above 

 the freezing point and there is consequently little conversion of starch 

 and sugar this temperature is best suited for the storage of seed pota- 

 toes. After long exposure to this temperature sugar to the amount 

 of 3 or 4% may have accumulated at the expense of the starch content. 

 About four-fifths of this accumulated sugar may be converted back 

 into starch after several days exposure of the tubers to a temperature 

 of 70-75°F.— F. A. Wolf. 



