THE PAPER SHELL ON 

 THE TREE 



In the course of experiments we have 

 produced walnuts that were devoid of 

 shell, but this proved a disadvantage as 

 the birds soon learned the secret. It 

 was necessary, therefore, to select 

 specimens with thin shells, instead of 

 those with no shells, to continue the 

 experiment. The ones here shown have 

 shells of the ideal thickness and 

 delicious white meats. 



