This tree is frequently found growing to a height of 100 or 160 feet, with an average diameter of 3 to 6 feet. It is used in Australia for carpenters' work generally, and also for the spokes of wheels, etc. The wood is of a light reddish colour, hard and compact, and rather difficult to work. The weight of a cubic foot dry is about 53 lbs. The crushing force of a piece 1 inch square and 1 inch high is 8800 lbs.; and the transverse strength of a specimen 1 inch square and 1 foot long between the supports, loaded in the middle, is 838 lbs. Another variety of the blue gum grows in Tasmania to a height of from 250 to over 300 feet, with a diameter of 8 to 10 feet. The colour of the wood is a yellowish brown.

* Contributed chiefly by Josiah Atwool, Esq., of the War Department, who had been for several years professionally employed in New South Wales.