48 STATE BOARD OF FORESTRY. 



have used it for poles, shafts, reaches, axles, doubletrees, racks, bolsters, 

 spokes, hubs and felloes and for the wooden parts of plows, harrows 

 and other agricultural implements. Like its first use for piling, Euca- 

 lyptus was first employed for vehicle parts by accident. 



Recently gum wood was experimentally used for wooden ties on 

 heavy auto trucks. The motors of these vehicles are damaged and bolts 

 are soon cut off by the jar of running on steel rims on city pavements, 

 and expensive sets of rubber tires last but a few months. A wooden tire 

 was devised by bolting seasoned blocks of gum wood, set with the grain 

 vertical, into a patent rim attached to the wheels. The tires have been 

 used successfully for six months without attention or repair, and show 

 few signs of wear. They have been found to break the jar and to take 

 up vibrations as readily as rubber tires. 



Insulator Pins. Eucalyptus has practically supplanted black locust 

 wood for insulator pins. This use annually consumes a large part of 

 the manufactured timber product, and in this form alone has California- 

 grown gum timber been exported. Large orders for insulator pins have 

 been filled in Canada and the Eastern States. Gum pins are in use in 

 most of the telephone and power transmission lines in this State, and are 

 used exclusively by leading contractors. Sound pins are still in use 

 after fifteen years' service. 



Furniture. Seasoned blue and red gum wood has been used to a 

 limited extent for cabinet work and for the manufacture of furniture. 

 Handsome chairs and tables have been made, which are very strong anr* 

 do not warp, check or loosen at the joints. The wood takes a splend 

 finish and has been stained to imitate mahogany very closely. 



Other Uses. In a few instances unstained panels, showing 

 have been used in the interior finishing of houses. The ti .ao also 



been manufactured into flooring and used in place of hai aple. It 

 has been used for pulley blocks, belt wheels, saw tables, brakeshoes, for 

 levers of house-moving windlasses, and, indeed, most generally where a 

 durable wood of homegeneous structure is required. 



BOTANICAL NAMES. 



A list of the botanical names of the species mentioned in this report 



follows : 



Common Names. Scientific Names. 



Blue Gum Eucalyptus globulus. 



Sugar Gum Eucalyptus corynocalyx. 



Red Gum . : Eucalyptus rostrata. 



Gray Gum Eucalyptus tereticornus. 



Manna Gum Eucalyptus viminalis. 



Lemon Gum . Eucalyptus citriodora. 



