— 106 



« 



contained 3 p. c. carvone (d^ 0,960; n D20 o 1,500; m.p. of the semicarbazone 

 162 to 163°), as well as 3 p. c. of a dextrorotatory tricyclic sesquiterpene, 

 probably identical with the sesquiterpene from the wood oil. This sesqui- 

 terpene gave: d~ 0,9335, n D20O 1,5039. 



Thyme Oil. All varieties continue to be in stock in sufficient 

 quantities, and there are no fluctuations in price to report. In spite of 

 the great drought, the producing centres again appear to be sending 

 satisfactory supplies to market this year. 



Oil of Thymus hyemalis. Up to the present nothing definite was 

 known as to the parent-plant of the so-called Spanish 'Verbena" oil. 

 Only recently J. C. Umney 1 ) has been furnished from Spain with a supply 

 of authentic distilling-material, which has been identified by E. M. Holmes 

 as Thymus hyemalis, Lange. This species is nearly related to T. hirtus, 

 Willd. and T. vulgaris, L. Boissier placed it under T. Mastichina, L. and 

 Pourret under T. sparsifolius var. hyemalis. Its habit of growth varies 

 considerably, but it is easily distinguishable from the other Thymus-species. 

 Umney's article contains illustrations of the entire plant as well as of the 

 bracts and parts of the flower. 



Turpentine Oil. C. H. Herty 2 ), in a profusely illustrated pamphlet, 

 describes a new method of tapping for the purpose of preparing turpentine. 

 It is known as the "light chipping" method and its principal advantage is 

 that the tree is wounded less deeply than by the old boxing method. As a 

 result of experiments made at Walkill, and extending over 4 years, Herty 

 finds that with the "light chipping" method it is possible to tap the trees 

 for an indefinite time, while the turpentine yield is larger than by the 

 older method. Moreover, the loss of economically valuable wood is 

 x much smaller than with the older treatment. 



Recent reports concerning the turpentine oil industry in British India 

 have been very favourable. According to a communication by the Forest 

 Administration of the United Provinces 3 ), the profit derived from the ex- 

 ploitation in the district of Naini-Tal in the past year was 85195 Rupees, 

 as compared with 38705 Rupees in the previous year. Extensive prepa- 

 rations have been made for increasing the turpentine output. The trees 

 are only tapped once every 15 years, 250000 trees being tapped each year. 



An illustration of a "Chir" tree (Pinus longifolia) in course of tapping 

 is given on p. 139 of R. S. Pearson's book u Commercial guide to the forest 

 economic products of India!'', which we review in p. 130 of the present Report. 



x ) Perficm. and Essent. Oil Record* '8,£ 1*912), 212. 



2 ) Relation of light chipping to the domiuercial yield of naval stores. U. S. Department 

 of Agriculture, Forest Service. Bull. 9C„ 1 9 1 J . " 



3 ) The Indian Trade Journal 25 (1912), No. 314, p. 25. 



