42 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



plant, and transplant ; an area where the students can be taught 

 how to trench and drain ; an area where they themselves will 

 plant out young trees to form woods which they will be able to 

 return to, and inspect, in years to come ; and finally, an area 

 where we can experiment with various species and mixtures, and 

 undertake different methods of planting, with a view to doing 

 our share towards solving some of the many pressing problems 

 which await solution in Scotland. 



Our forest garden and demonstration woods would fulfil 

 several purposes, for we should welcome one and all who care to 

 visit them, either to work in them as students, or to make use 

 of any of our methods which have proved successful. 



Such an area as I have described exists in the vicinity of 

 Edinburgh, and I cannot press upon the University too strongly 

 the vital importance which exists, that we should endeavour to 

 acquire it at the very earliest possible moment. So far as the 

 Forestry Department is concerned, it is one of the most important 

 questions resting with the University for early consideration, for 

 upon it depends, must depend, in the eyes of the practical 

 forester, the whole question of the qualifications of this University 

 to grant a Degree in Forestry which will be recognised as an asset 

 of value in the forestry world. 



4. An Attack by the Large Larch Sawfly, Nematus 

 erichsoni} 



By A. W. B. Edwards, HoUie Bank, Thirlmere. 



I will endeavour to describe what has been done by the 

 Manchester Corporation, at Thirlmere, to cope with an attack 

 by this pest. 



First of all, they were advised to hoe the ground underneath 

 the trees in the plantations which were badly attacked ; also to 

 gather the moss with the top layer of soil into heaps and mix 

 it with hot lime. This operation was of course to be undertaken 

 when the sawflies were in the cocoon stage. A small area 

 was treated in this manner, but owing to the nature and situation 

 of the ground it was found to be far too expensive. 



Secondly, the crop on one plantation was felled, and the 



1 From a prize essay which want of space prevents our publishing in full. — 

 Hon. Ed. 



