334 TRANSACTIOXS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



As it is desired to place upon record authentic cases of the 

 occurrence of Pezha Willkommii on the Japanese larch, I send the 

 following note: — In May of this year (1903), while examining 

 the " Investigation Plots " of pure Japanese larch in the Liepe 

 disti'ict, near Chorin (North Germany), I found several trees 

 affected by disease. The well-known sunken patches or blisters, 

 and the outpouring of turpentine from the cancerous spots, com- 

 monly observed on diseased specimens of the common larch, 

 were in no way different upon Larix leptolepis. Yellowish-white 

 pustules and cup-shaped ascophores were abundantly present. I 

 took several specimens to Forstmeister Dr Kienitz, Professor of 

 Forest Protection in Eberswalde Academy, with whom I was 

 staying, and he at once declared them to be larch disease. Dr 

 Moller, Professor of Cryptogamic Botany, concurred in this 

 opinion. 



One of the groups where the disease was present was thirteen 

 years old (planted in 1890), the trees were 30 feet high, 

 and had an average diameter at bi'east-height of 3 inches. A 

 second small wood in which the blister was found was of still 

 better general growth. Having been planted in 1892, it was 

 eleven years old in spring 1903. The average height of the trees 

 waa 34 feet, and the diameter 4 inches. The attacked trees were 

 somewhat crippled, and did not reach these dimensions. In 

 neither of the woods could the damage done be said to be at all 

 serious, but it gives evidence that the Japanese larch is not 

 immune to the pest. Such cases make it doubtful if that tree 

 will permanently maintain its present healthy state, and there is 

 always the drawback to its adoption, that it requires a better soil 

 and kindlier situation than the European larch. 



Fraser Story. 



The Larch and the Moth. 



In the Zeitschrift/iir Forst undJagdwesentor J SinuRry I902,there 

 appears an article by Herr Forstmeister Franz Boden, Hameln, 

 entitled "The Larch and the Moth." The particular moth 

 referred to is, of course, the larch mining moth, Coleophera 

 (Tinea) laricella, so often associated with larch disease. 



During the course of his observations, Herr Forstmeister Boden 

 found that the female moth selected the trees for oviposition with 

 considerable nicety, choosing those lying favourably to the sun. 



