136 | Report OF THE BOYTANIST OF THE 
commonly grown Cuthbert is one of the most affected and Colum- 
bian one of the least affected. 
It is not always advisable to destroy a plantation because it 
has been seriously injured by cane blight. It may recover suffi- 
ciently to give profitable crops again. Since the disease does 
not attack the roots the new canes are just as vigorous in diseased 
plantations as in healthy ones, and if the weather conditions 
happen to be unfavorable to infection nearly a full crop may be 
obtained from plantations badly diseased the preceding season. 
The writers have known of instances of this kind. 
Il, RASPBERRY YELLOWS. 
The Marlboro red raspberry, a once popular variety, is said by 
fruit growers to be ‘‘running out.” In Ulster County particu- 
larly its culture is said to be no longer profitable; and throughout 
the Hudson Valley one frequently hears of the ravages of the 
“Marlboro disease.” The foliage and fruit dry up — sometimes 
eradually, sometimes suddenly. There has been much specula- 
tion concerning the cause of the trouble. 
According to our observations the so-called Marlboro disease is, 
in reality, two diseases. It is partly cane blight (to which the 
variety is much subject) and partly another disease for which we 
propose the name ‘“ Yellows.” Plants attacked by yellows have 
a stunted, yellowish aspect suggestive of peach yellows and 
Woods’ Bermuda lily disease, especially the latter. On fruiting 
canes the fruit-bearing laterals are dwarfed, often to one-half 
their normal length. The leaves are small, cyrled slightly down- 
ward at the margins and faintly mottled with yellow. Some of 
the berries dry up without ripening and those that ripen are 
undersized and insipid. Much of the foliage withers at the same 
time.. New canes, for the most part, are not seriously checked 
in growth although their foliage is usually more or less affected. 
The foliage on new canes does not wither and there are rarely 
to be found any dead spots or areas. The leaves on the upper 
portion of the cane may be much mottled while those on the 
lower portion are nearly or quite normal. The reverse may also 
happen. Badly diseased canes and apparently healthy ones may 
