44-t 



Journal op the Department of agriculture. 



Strand Street, Capetown ; and Bach & Hicksou, Dodc Road, Cape- 

 town. To compare a quotation from one firm fairly with that from 

 another it is necessary to compare the cloths on which the quotations 

 ;ire based. Commonly one duck cloth is hea^der and stronger, and 

 sometimes moie closely woven, than another that is desig-nated to he 

 of the same wei<j"ht. 



Changing Poles and Uprights. — Sheets up to 45 feet in diametei' 

 are drawn over the tree, and dragged from one tree directly on to 

 another, with the aid of "changing poles." These poles should be 

 about a foot longer than the trees are liigli. Two are needed, but it 

 is desirable to have several spare ones on lunid. Bamboo poles are 



KiG. h.— ChuiicjliKj Pole— Top fitted 

 with projecting- blunt 

 tipped rotl to hook in ametal 

 ring at the "catch place" 

 on the sheet. The guy rojie 

 is attached to the same rod. 

 andan iron band strengthens 

 the top of the jiole. 



Vui. 6. — Derrick Pole. — Top fitted with 

 a specially made metal pulley 

 hinged on supporting IjoJts that 

 pass through the pole. The guy 

 rope is attached to a ring- 

 clamped under the nut holding 

 one of the bolts. 



generally utilized for the purpose in South Africa. If cut from 

 lumber the poles should be 2 to 3 inches in diameter. Straight grained 

 Oregon pine is desirable. The foot of the pole should be pointed to 

 keep it from slipping on the ground, and about six inches from the 

 top a guy-rope should be secured. The rope should be about half as 

 long again as the pole. The top of the pole above the rope should be 

 uarrow'ed so as to slip into a loop of rope tied to the sheet near its 

 front, or some other easy means of attachment should be provided for. 

 Commonly the top of the pole is smoothly rounded, and the simple 

 plan followed of drawing a fold of the cloth over the end and fastening- 

 it by a half-hitch of the guy-rope. After the poles are attached, 

 one on each side of the tree and lying parallel, they are raised by 

 pulling- on the guy-ropes, thus drawing the cover upwards and 

 forwards. If the perimeter of the cloth does not lie heavy on tlie 

 ground after the tree is covered, soil is shovelled on to it. 



Sheets too heavy to be raised with changing poles are lifted with 

 tbe aid of uprights. Two are used, one at each side of the tree, as 



