23 



one drop here and one drop there with the spore between 

 and growing, so that in order to be effective you must have 

 a very fine mist with the drops as close together as possible. 

 The test of a good nozzle is to have it give as many drops 

 per square inch as possible which will not run together. 



MR. RICHARDS OF MARSHFIELD. What is that 

 scab that I find on some of my apples- — I raise some six or 

 seven acres — I find some that will have some black spots on 

 the surface of the apple, extending some ways into the in- 

 terior of the apple and destroying the taste of the apple. 

 Another question is this, in speaking about the use of lime- 

 sulfur and arsenate of lead the speaker gave us what pro- 

 portions to use. What proportion shall we mix them in to 

 get the best results for the apple scab. 



DR. WHETZEL. I will answer the last question first. 

 I thought I had made it clear to you. Lime-sulfur, one part 

 to forty parts of water. To this dilute solution you add ar- 

 senate of lead, paste, two pounds to fifty gallons of this di- 

 lute solution of lime-sulfur. If you use the powered, one 

 pound to fiftj' gallons. For your conscience sake you can 

 throw in an extra pound if you want to. 



Now, the first question was with respect to a particular 

 case. He has a black spot on the fruit which goes into the 

 flesh some distance, and he wants to know if that is scab. 



MR. RICHARDS. It is very small. 



DR. WHETZEL. I doubt if it is scab, although I 

 couldn't tell unless I saw the fruit. Most of the scab spots 

 on the fruit are as large as your finger nail except those 

 which come on the storage apple. They are always very 

 small, seldom larger that the head of a pin, and very black, 

 but they don't go into the fruit to any depth. Probably 

 v/hat you have in mind is the so-called Baldwin Spot, which 

 is very common. It is not caused by a fungus. 



MR. RICHARDS. Can that be prevented by spraying? 



DR. WHETZEL. No, sir. Spraying will not control 

 that. 

 ^ MR. J. 0. HALE OF BYFIELD. I would like to ask 



