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Lac 
Lac is an exudation produced on the stems of a variety 
of Chinese trees, chiefly in the Euphorbiaceae, or Spurge 
Family, as a result of punctures of the bark made by 
insects known as “‘lac insects.” 
1163. Scab lac. The lac in its natural condition, as scraped off of the trees. 
1164. Button lac. 
1165. Raw shellac. 
1166. Stick lac. 
Miscellaneous Resins 
AsPHALT (Asphaltum) 
Asphaltum is a substance resembling pitch or tar in 
appearance and composition, found in large deposits called 
‘asphalt lakes,” in many countries. The manner of its 
origin is not positively known, but its original source is 
apparently vegetable. It belongs naturally near the resins, 
and is also related to coal. 
1167. Asphalt from Ohio. 
1168. The same, from California. 
1169. Gilsonite. A form of asphalt from Utah. 
1170-1171. The same from California and southward. 
1172. Wurzite. A form of asphalt from Utah. 
1173. Ozokerite. Another variety. 
1174. Elaterite. Another variety, probably from Utah. 
1175. Maltha, Grade C. A variety from Petrola, southern California. 
1176-1178. Asphalt from Barbadoes. 
1179-1180. Asphalt from Trinidad, West Indies. 
1181. Asphalt from Cuba. 
1182. Another sample from the West Indies. 
1183-1185. Samples of asphalt from Colombia, South America. 
1186-1187. Asphalt from Venezuela. 
Turpentines, Tars, and Pitches 
Turpentines are oleo-resins obtained as exudations 
through natural or artificial openings in the barks of various 
trees, especially those of the Pinaceae, or pine family. 
By properly distilling the turpentine we can obtain from 
it the volatile oil in its natural state, the resins or resin 
remaining behind. By the destructive distillation of this 
resin we can obtain a series of resin-oils. 
