98 REPORT OF THE BOTANICAL DEPARTMENT OF THE 
On September 10 the following notes were made: 
Row 1. Sprayed three times. Five hills entirely dead and one 
nearly dead; all others in nearly full foliage. 
Row 2. Sprayed every two weeks. One hill nearly dead; all 
others in nearly full foliage. 
Row 3. Unsprayed. Hills entirely dead with stems dry.... 102 
Hills with leaves all dead but stems 

succulent, «Ss spc cmtewiecwaes Stree 23 
Hills with some green leaves.......... 102 
TOTAL sa 2 een el ate ere eae 227 
— 
Row 7. Sprayed three times. Seven hills entirely dead and two 
more nearly dead; all others in nearly full foliage. 
Row 8&8. Sprayed every two weeks. Six hills entirely dead and 
one nearly dead; all others in nearly full foliage. 
Row 9. Unsprayed. Hills entirely dead with stems dry.... 125 
Hills with leaves all dead but stems 
Still sueenléent. ~ 6.5 Se eee 24 
Hills with some green leaves......... 80 
Totals: 4. sah wasn Ad he oe ee 229 
—_—_—— 

The sprayed rows of both series beginning to decline. Rows 
sprayed every two weeks slightly superior to those sprayed only 
three times. 
On September 12 the unsprayed rows were pronounced dead. 
A few of the plants still had small tufts of green leaves but 
there was certainly no material growth of tubers after this date. 
The sprayed rows, on the contrary, continued in good foliage 
and must have made considerable growth of tubers for at least 
two weeks longer. On the night of September 22 there was a 
frost which killed potatoes over the greater part of the State, but 
owing to their elevated situation the experiment potatoes were 
only slightly injured. 
After September 26 the sprayed rows deteriorated rapidly, but 
as late as October 5 the rows sprayed every two weeks still pre- 
sented a continuous strip of green foliage clear across the field. 
They were finally killed by frost on the night of October 6 after 
having lived fully 25 days longer than those unsprayed. How- 
