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fairly vigorous condition of health. The largest root, which is facing the camera, is 
quite 3 inches in diameter. It starts from just above the ringbarking, and has com- 
pletely grown over it so as to hide it altogether. In addition to this big root are a number 
of smaller ones from as thick as a pencil to three-quarters of an inch. All these roots 
are on the west, south, and east sides of the tree. 
Mr. Grasby's photos, published in 1914, are the first published, so far as I am 
aware, of adventitious roots in a Eucalypt. 
E. robusta Sm. Mr. T. Ormond O'Brien informed me that thirty-five to forty 
years ago he drove a stake of Swamp Mahogany (Eucalyptus robusta) 3 inches in diameter, 
and 9 feet from the ground. The stake took root, and was (1 905) a spreading tree of 25 feet, 
and diameter of 14 inches below the fork. It forked at 7 feet from the ground. Water 
has encroached on this tree, and its present roots are at a higher level than the original 
roots. I saw the tree at Mr. O'Brien's house, at Bondi, a suburb of Sydney, and 
published an account of it in the Sydney Morning Herald, of 15th March, 1905, this 
being the first published account of adventitious roots in s Eucalyptus, so far as I am 
aware. 
A few days afterwards a gentleman from Kincumber stated that stakes of 
Eucalyptus robusta " sprout readily if stuck in the ground." In the Herald of the 17th 
March, 1905, a correspondent, " Farmer," wrote : 
I can state that some years ago I erected a barn on the Eichmond Eiver. The upright posts 
were some form of the Eucalyptus (Mahogany) I believe. I squared them on two sides with the adze, and 
finished the buildings. For some considerable time afterwards young sprouts used to push through, and 
grow about 6 inches long. These posts would be about 12 inches through at the butt end, and about 11 
feet out of the ground. The subsoil was sandy and moist. 
I believe these posts to have been Eucalyptus robusta also. 
Dr. G. V. P.erez, of Teneriffe, Canary Islands, wrote to me in 1915 : 
E. tereticornis Sm. " Stout stakes of E. tereticornis grown here hammered into 
the ground have produced shoots, but they have died after a few months." This 
is, of course, an Australian tree our Forest Red Gum. 
E. paniculata Sm.-Mr. F. Cridland gives me the following information concerning 
an Ironbark, the first Ironbark to be thus recorded : 
In June or July, 1916 (eighteen months ago), I had some Ironbark trees cut down on my property 
near Cronuila. I had them carted to my house about a mile away, where they lay for a week or two, 
then I put them in the ground as upright posts to build a rose bower. Some time after one of the 
posts, about 9 inches in diameter, threw out a few shocts. These died off later, but others have since 
taken their places, and at the present time the post has several green shoots up to 6 inches m length. 
Macadamia ternifolia F.v.M. The "Queensland Nut." Mr. W. F. Blakely 
has drawn my attention to a stubby mass of roots in a tree of this species in the Botanic 
Gardens, Sydney, a little east of the Refreshment Room. They are at the forking of 
some branches, and about 7 feet from the ground. During a wet season these roots 
are obviously alive. This is the first instance of the kind in the Proteacese known to 
me. 
