280 



Frederick Stoivard 



each, the former phmted in good garden soil (vitality test) and 

 the latter stored in paper bags (storage test). 



The immediate objects of these experiments were : — 



(1) To establish as definitely as possible whether or not the 

 vitality of the buds, and hence the sprouting power, was 

 destroyed : and 



(2) To test whether or not the storage qualities of the different 

 types of tubers were impaired, under the selected conditions 

 of treatment. 



Table 1. 



Results of plantiug and storage of acid-treated tubers. 

 A. — Mature Victorian thick-skins. 



Expt. 



1 



2 

 3 



4 



5 

 6 

 7 

 7a 



Date of 

 treatment 



10/7/11 

 10/7/11 

 12/7/11 

 12/7/11 



13/7/11 

 13/7/11 

 19/7/11 

 17/7/11 



5 per cent sulphuric acid. 



Duration of 

 steeping 



2 hours 

 6 „ 



3 „ 

 1 » 



hours 



7b 17/7/11 



1 



20 



3 



2 



Date of 

 planting- 



10/7/11 



10/7/11 



12/7/11 

 12/7/11 



Behaviour on 

 (a) planting (b) storage 



3 growmg- 

 



2 



3 



10% sulphuric acid. 



20/7/11 

 20/7/11 

 20^ 7/ 1 1 

 20/7/11 



20/7/ 1 1 



1 growing* 



3 















2 sprouted 



2 



2 



sprouted 



2 











1 



Keeping 



quality of 



stored 



tubers 



ffood 



I'ood 



R. — Mature Victorian thin red-skins. 



8 19/7/11 4^ hours 20/7/11 1 growing sprouted 



9 20,7/11 , 2^ „ 20/7/11 1 „ 1 „ 



srood 



C. — Mature South Australian thin-skins. 



10 18/7/11 3 hours 20/7/11 o-rowing 2 sprouted 



11 18/7 11 5 ., 20/7/11 1 „ 



<rood 



These observations were made on August 24, 1911, and again 

 on August 28, 1911 ; on the latter date the accompanying 

 photographs were taken of the planting and storage test experi- 

 ments. 



