TWO FOREST ARBORETUMS NEAR BRUSSELS. 1 3 



timber. At 12 years the three trees here average 5 inches 

 diameter by 25 feet high. 



Liriodendron tulipifera. At 11 years of age is nearly the 

 size of the "common ash" at 30 years. For many purposes it 

 is as useful a timber as Fraxinus excelsior, and for some purposes 

 more useful. It does not seem to have received in England 

 (U.K.) the attention that it deserves. The leaves, as with the 

 " common ash " and many other trees of a temperate climate, 

 are smaller than in South Africa. 



Nyssa sylvatica. The best of all the trees here for autumn 

 tints, but very slow-growing. 



Quercus laurifolia, which was green at Groenendaal yesterday, 

 has a deep copper coloration here; but, says M. Bommer, this 

 may be a hybrid. 



Liquidatnbar styraciflua is as brilliant in its autumn tints here 

 as in South Africa or at Amani — the botanical and forest 

 station in German East Africa that some day may vie with 

 Buitenzorg. Its leaves are here aglow with colour. This year 

 at Kew the leaves are colourless. The difference struck me at 

 once on my return to Kew. It is probably climatic. 



Pseudotsuga Douglasti var. glauca. Colorado Douglas. This, 

 they say, is the true Colorado Douglas : not a glaucous form 

 of the Oregon Douglas. 



It looks to me more like a spruce than typical Douglas. It is 

 certainly different from the Colorado Douglas that I have 

 frequently been shown in England, and is in fact much more 

 like what one would expect in a tree from Colorado. It is still 

 less like the Pseudotsuga ttiacrocarpa figured at page 104 of 

 Sudworth's Forest Trees of the Pacific Coast. And that tree seems 

 properly sub-tropical and would probably not be growing here. 

 This tree is slow-growing, not averaging more than i foot a 

 year. 



Picea pungens. Handsome but slow-growing. At 1 2 years 

 the trees average about 10 feet high. They vary much in size 

 and several have died recently. 



Libocedrus decurrens. Does well here. A useful tree for 

 South Africa, says my guide M. Bommer. It has been little 

 planted there so far. 



Abies cone lor. Average of dominating stem 4 inches diameter 

 at 25 years, shows a vigorous but slow growth, with i foot or 

 \\ foot leading shoots. Almost the only dry-country silver fir. 



