266 Journal of the Department op Agriculture. 



distinguisji from Kuc. globulus (the ordiuary blue guui), but it differs 

 from the latter in haying a cleaner and straighter stem less inclined 

 to taper. So far it has also proved hardier to frost and drought than 

 the latter within certain limits of soil and situation. On the high 

 veld these limitations are G feet of soil, avoidance of frost- hollows, 

 protection against cold winds, and 24 inches average rainfall. Other 

 conditions being favourable, less than 24 inches may suffire, but this 

 cannot be said for certain. Rate of growtli is perhaps slightly in 

 its favour ovei- Euc. glohvlus, and almost, if not quite, equal to that 

 of Euc. viminalis. Like Eve. rosfrata and Eve. r/lohulns it is liable 

 to be cut by very cold winds during the first two or three seasons, 

 but will be safe if these are survived. In .situations exposed to cold 

 wind, the best plan is to plant only behind the sJielter of blocks or 

 belts of Eve. riminalis, and if any failures occur they should be 

 filled up at once with the latter species. A planting espacement of 

 6 feet by 6 feet is recommended rso that the trees will close up quickly 

 and protect each other from cold. At this espacement up to 15 or 

 even 20 per cent, of failures can be neglected unless they occur in 

 large patches. There is little information available as to quality of 

 the wood, except that it is hard and strong. It is probably at least 

 equal to that of the blue gum. In a normal stand of 6 feet by 6 feet, 

 thinning should commence about th" fourth or fifth year. Under 

 proper treatment it should attain prop sizes as quickly as Eue. 

 vimivalis, and it is probable that a normal stand will then contain a 

 higher percentage of props to lagging and firewood than the latter, 

 but as will have been gathered, greater skill is necessary in sylvi- 

 cultural treatment so as to minimize risk of failure. 



Euea lijptu.s <j lo hu Ivs . 



The ordinary blue gum is too well known to need description. 

 As for its sylvicultural treatment and attainments on the high veld, 

 all that need be said is that they are about the sajiie as for Euc 

 Maidenii, except that the precautions stipulated in case of the latter 

 are even more necessary. The timber of Eue. glohulus is of good 

 quality for many industrial purposes when grown to maturity and 

 properly seasoned. It will, however, only reach that maturity under 

 favourable conditions. 



Other Euealypts. 



There are a number of other euealypts grown on the high veld 

 with more or less success, such as Eve. stvartiana, Eue. eoriacea, Eue. 

 cinera, Eue. gunnii, Euc. amygdaliiia, and Eue. sideroxylon. The 

 last mentioned is the only one of these that produces a strong and 

 durable commercial timber, and may be worth planting in situations 

 too dry for Euc. rostrata, though it also requires good conditions to 

 reach its best development. The reason it is not included among 

 those specially recommended is that, conditions being equal, it 

 produces a smaller volume per acre than Eue. rostrata, to which it 

 otherwise approximf\tes in respect of sylvicultural treatment. The 

 timber of the other species are no better than, and in some respects 

 inferior to, Eue. vi ninalis, and mostly of slower growth, so that there 

 is no object in grvwing them except for shelter. 



