SEED EXPERIMENTS WITH PINUS SYLVESTRIS. 



171 



None of the plots suffered from leaf-shedding, the "blight" so 

 common in many of the countries from which the seed came, 

 which is generally attributed to Lophodermium{Hystenu»i)Pinastri. 



The experiment is of course still in its earliest stages ; the 

 plants were pricked out into nursery lines last spring, and will 

 afterwards be planted in various soils and kept under observa- 

 tion. In the meantime, I merely wish to record what has 

 happened so far. It is true that similar results will not always 

 be obtained, and of course no final conclusions can be drawn 

 from those obtained here, but they encourage further inquiry. 



The plants at the end of the third year (first year after trans- 

 planting) gave the following results : — 



Seed was sown in the same way as that described above, in 

 each of the several countries concerned, but I believe that no 

 report has yet been published regarding them. I had an 

 opportunity, however, of seeing the different lots in the 

 Eberswalde nursery in 1908, and those in Grafrath (Bavaria) and 

 Mariabrunn (Vienna) last year. On the whole, the results 

 corresponded fairly closely with those obtained at Bangor, 



One of my students (Mr E, Baker) has supplied me with the 

 following particulars regarding the growth of the plants at 

 Chorin (Prussia) : — 



