1908.] 



PUBLIC DOCUMENT — No. 33. 



■11 



The average yields of sound tubers under the varying ferti- 

 lizer treatments were as follows : — 



1 Owing to a shortage iu the available supply of silicate of potash, and the impossibility 

 of procuring more, the quantity applied to this plot was only about one-sixth of the regular 

 amount. 



