TAPPING MARITIME PINES. 



709 



8 centimeters at the base (5^ and 3 inches) and 14 centimeters 

 deep. Then, after cutting a groove, the collar is fixed below 

 it, and the pot placed on the sand under the collar and gradu- 

 ally raised with the cut, as explained below. Every spring, 

 the whole apparatus is raised above the sterile portion of the 

 groove, where the former year's tapping had stopped (Fig. 372). 



In order to fix the collar, an incision is made with a sharp, 

 curved, steel implement, and the collar fixed in the incision. 

 The pot is supported between the collar and a nail driven into 

 the tree below the pot. The pots also are bored with a hole 

 near their rim, so that they can be suspended, if necessary, 

 and this hole allows any 

 rain-water, which is in 

 the pot, to drain away. 

 Frequently, evaporation of 

 the turpentine is prevented 

 by covering the pot with 

 a thin piece of pinewood. 

 This improved system has ' 

 increased the yield of resin 

 by from 3 to 4J per cent., 

 and yields a much purer 

 resin than before, selling 

 at 10 francs a cask more 

 than that collected in the 

 sand. 



Only the more liquid parts of the resin reach the pot, the 

 rest solidifies on the way and remains attached to the groove. 

 The upper part of this solid crust is removed easily by hand ; 

 it is thus collected by the resin-tapper, and is termed galipot. 

 The resin in contact with the wood is much harder, and can 

 be removed only by a scraping implement. This substance, 

 mixed with chips of wood, is termed barms. When collected 

 according to Hugues' method, hardly any galipot is produced, 

 the residue being chiefly barnts. 



After the pot has become filled sufficiently with crude resin, 

 the collector empties it into a kind of basket (escon-arte), holding 



* This, and all plates used in this section (except Fig. 384) are taken from 

 Moppfi's u Technologic forostiere." 



Fig. 372.* Hugues' collar and pot. 



