Speating Apple Orchards in a Wet Season. 385 



Twenty-one varieties have been reported in the " Free " columns 

 only; but of these not one was reported more than once, so it is 

 obviously unfair to say that they are varieties which are not sub- 

 ject to the attacks of fungi. In going down the list it is seen 

 that as soon as more than one observer mentions a variety it also 

 falls into another column, showing that one observation is insuffi- 

 cient. Many varieties are found in the three column, but here 

 fairly accurate conclusions may be drawn by a comparison 

 of the figures. It may be assumed that the Baldwin, Seek- 

 no-further, Astrachan and some others are comparatively 

 free from scab, while the Wine Sap, Early Hajrvest, Red 

 June and others are much injured. Many varieties are placed 

 high on the list because some observer reported them free in a 

 certain locality, and still the large majority of reports place them 

 in one of the two remaining columns. 



Following the above is a long list of varieties which were men- 

 tionel only in the column marked "Not seriously affected." No 

 conclusion can be drawn from this list. Where more observa- 

 tions have been made the following varieties may be said to be 

 fairly free: Lucy Pew, Roman Stem, Rhode Island Greening and 

 Rawle Janet, although the last two are also reported in the first 

 column, those "Habitually badly affected." Likewise Belmont; 

 Huntsman and Fameuse may be said to be considerably injuT-eJ. 

 The next varieties which may be mentioned are Wine, Carolina 

 June, Ortley, and White Winter Pearmain, these being the last 

 four on the list. Although they stand so low, it may be doubted 

 if they are really more susceptible than the Fameuse, for instance, 

 although the latter is much higher in the scale. 



PART III. THE CHEMISTRY OF THE PREPARATIONS. 



Some attention has already been given to the chemical action 

 of insecticides and fungicides in bulletins issued by this station.* 

 Several important questions regarding the Bordeaux mixture 



* See Cornell Experiment Station Bulletin No. 18, July, 18110. Ibid, No, 35, 



December, 1891. 



49 



