299 



In my review of the lieiglits of Australia's tallest trees, already referred to, 

 the following passage occurs : — 



Turning to Western Australia, Mueller, in "Seemann's Journal of Botany," states that Mr. 

 Pemberton Walcott rueasurtd a Karri {Encali/plus diversiculor) in one of the delightful glens of the 

 Warren River, "where it rises to approximately 400 feet." 



On another occasion " Messrs. Muir saw trees with stems 300 feet long up to the first branch, and 

 1 myself noticed many trees which approached to 440 feet in their total height. When closely growing the 

 young trees may have a comparative!}' slender trunk, so much so that a tree 180 feet high may show a 

 stem hardly over a foot in diameter." 



These figures require verification. 



The Karri tree has a red timber, and undoubtedly resembles Jarrah {E. 

 marginata) a good deal. All people agree as to their external similarity, and many 

 people have their own methods of distinguishing them. In the forest or in the log, 

 the differences of habitat and appearance are obvious enough, but they closely 

 resemble each other as sawn stuff. A good test is by burning, when Karri burns to 

 a white ash, while Jarrah leaves a black charcoal. 



It is not within the scope of this work to offer a pronouncement in regard to 

 the Karri-Jarrah question. An official Western Australian statement is— 



"Karri" (£ucali/ptus diverskolor). — Height of average tree about 150 feet, running to 6 feet in 

 diameter at breast high. The timber is heavy, dense, tough, elastic, and clo.sely resembles Jarrah in 

 appearance, weighing about 63 lb. per cubic foot when seasoned. Economic uses^ — Railway car and waggon 

 frames and bodies, bridge timbsrs, flooring, p'anking, telegraph pole arms, felloes, shafts, woodblocking. 



" Jarrah " (Eucalyptus marginata). — A tree averaging 90 to 10 J feet in height, and from 2 to 3 feet 

 in diameter at the base. The wood is very hanl and dense, weighing about 60 lb. per cubic foot when 

 seasoned. Economic uses — Railway sleepers, jetties, bridges, marine and engineering works of all kinds, 

 building construction, flooring, woodblocking, boat-building, fencing, furniture. Sec. 



The consensus of Western Australian opinion seems to be that the use of 

 Karri in engineering works is for superstructure only. Undoubtedly it is a valuable 

 timber in the directions indicated in the statement just quoted. 



SYNONYM. 



E. colossea F.v.M. 



In Fragm. vii, 42, the seedlings are described, but I cannot find that a 

 formal description of the species was published. 



In " Eucalyptographiu," under E. diverskolor, occurs the passage — 



" led to the belief that the gigantic Karri was specifically dillerent, and hence it became 



temporarily distinguished as E. colossea, under wliich very impressive designation it chiefly stdl passes in 

 the countries around the Mediterranean Sea." 



Under this name E. dicersicolor F.v.M. has been distributed to various 

 herbaria. 



