DISEASES OF THE CRANBEERT. 65 



manner. The vine of last year will have started 

 spears or uprights, in that season those spears have 

 not attained their growth. In the following spring 

 they will becjome taller, and the new growth will be 

 perceptible by the contrast. The former year's growth 

 has a dark hue, and stronger stem ; the new growth 

 is thinner, green in appearance, and altogether more 

 delicate. " The worm begins its ravages from the 

 point that the new growth has started. It does not 

 descend down the old growth, but from the base of 

 the new spring growth it begins its operations, work- 

 ing upward."* This insect comes in swarms. It 

 alights on the leaves, and extracts the moisture. 

 There seems to be in the vine or young leaf a juice 

 which by them is sought after. When it is pi'esent it 

 is known by the vine being webbed up and appearing 

 as though it was suffering from the fire blight. 



At the period when these attacks are made, there is 

 some degree of certainty. It is most frequently im- 

 mediately after blossoming time, and their ravages are 

 often fatal to the crop of that yard which they visit. 

 There is something singular about the plan upon 

 which they act, but as it is new, we must describe that 

 action, leaving the ascertaining of the cause thereof to 

 fttrther research and more experience. We are fami- 

 liar with the situation of a large pond which is bordered 



* Howes Chapman, Esq. Joshua 0. Howes, Esq. 



