may be used to good advantage in preparing the mixture with 

 sluggish lime, but with quick-acting lime hot water is not neces- 

 sary, and is likely to bring too much of the sulphur into solution. 

 If desired, the mixture may be kept for a week or more without 

 deterioration, but should be thoroughly stirred before using. 



In applying the self-boiled lime-sulphur mixture, the spraying 

 outfit should be equipped with a good agitator. The mixture 

 settles to the bottom of the tank, and unless kept thoroughly 

 agitated cannot be evenly applied. 



Spraying should be commenced early in the season, when the 

 foliage is about half-grown and repeated as necessity demands. 



If the soil be dug over during the winter, material capable of 

 infecting the foliage in the spring would be buried. 



F. T. BROOKS. The cause of the Cherry-leaf scorch disease. 



The development of " Gnomonia erythrostoma ' ' is the cause of the 

 Cherry-leaf scorch disease. (Cambridge - Philosophical Society, 

 June 6). Nature, vol. 84, n. 2124, p. 63. London, July 14, 1910. 



The present investigation concerns an examination of the life- 

 history of this fungus from the cytological standpoint, very little 

 work on the Pyrenomycetes having hitherto, been done from this 

 point of view. 



E. S. SALMON. A Canker of Apple trees caused by the Brown 

 R.ot Fungus. The Gardener's Chronicle, n. 3621, May 21, 1910. 



The Fungus Sclerotinia fructigena in its conidial or Monilia 

 stage has long been known as the cause of the Brown Rot di- 

 sease of ihe fruit of the Apple, Pear, Cherry, Plum and Peach. 

 It is also well-known that the spawn (mycelium) of this fungus can 

 invade and kill the wood of the Cherry, Plum and Peach, and it 

 is not uncommon to find on these trees (when Brown Rot has been 

 prevalent on their fruit) a dying back of the branches from this 

 cause. 



Under certain circumstances the present fungus is able to cause 

 an injury to the wood of the Apple, a fact which does not seem 

 to have been recorded. This injury does not, as a rule, result in 

 the death of the entire shoot, as in the case of the Cherry, Plum 

 and Peach, but is localised and takes the form of canker. This 

 canker would seem only to occur on certain varieties of apples, 



