Professor Dunbar's Erica?. 



131 



In the pruning of the following Spring the laterals of two 

 years' growth which had borne fruit are cut off close, and the 

 young laterals which had sprung from their base (Jig. 26. ?'), are 



loosened from the wall and tied down to succeed them ; the 

 other laterals (k), are tied in, and the upright shoot short- 

 ened (I) as before. 



Now, or before, the side shoots will have to be headed down 

 once, or even twice, so as to increase their number, and 

 regularly cover the wall. The extent to which this practice is 

 carried, will depend on the height of the wall, and the distance 

 of the trees from each other ; the ultimate object being to 

 produce a fan form, as regular as possible, of permanent wood, 

 with no young wood thereon besides what is produced along 

 the spokes of the fan on their upper side, at about 12 inches 

 apart, and the prolongation of the shoots. 



Art. IX. A Catalogue of Erica, in the Collection of George 

 Dunbar, Esq. F.R. S.E. &c. Professor of Greek in the 

 University of Edinburgh. Communicated by the Professor. 



Sir; 

 I have sent enclosed with this a catalogue of the Ericas in 

 my possession, that you may insert it, if agreeable, in the 



