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va Slaed - in. INevorbee 1913, at a cost of #£ 550, fone concentrating sie and 
dist tilling oil. In 1916—17, it was enlarged considerably, with the aid of a Government 
, and it is not at all unlikely that further extension will soon be required. 
a The cost of the Onderneeming factory, erate) built in. 1916, in its initial 
= ge amounted to £ 645. | 
In this: factory’) there are two stills, eee of containing 100 and 140 gallons 
juice, respectively, | both being coupled up to the Same condenser. The juice 
| in the stills is heated by steam, when the oil contained in it comes over with the 
am into the condenser and is then collected in Florentine flasks. 
The produce dealt with from May, 1915, to March, 1916, was 3029 barrels of fruit 
and 7122 gallons of juice, representing | a total crop of 3920 barrels of fruit. — 
_ The limes are bought from the people or estate ‘owners at a fixed price (3s. 9d. 
er barrel in 1917) and the juice at 6d. per gallon. A 
‘Further details concerning the Government Lime Factory in Onaeieca ue British 
G uiana, are found elsewhere®). In the fiscal year ending in March 1918, the factory 
bought 3504 bags of limes, yielding 27652 gallons of juice. Besides, 447 gallons of — 
juice were bought. The total yield of oil amounted to’ 1100 Ibs., 7. e. 4 Ibs. from every 
100 gallons, against 3*/2 Ibs. during in the previous season. The yield from fresh juice 
on several occasions exceeded 41/2 Ibs. Ber 100 gallons, while that from stale juice fell 
Cc 0 DP esideraby - 
3 | q , 
E. “Marsh ‘rosemary Oil. Only a very few indications are to be found in text 
books, &c., regarding the essential oil of the marsh rosemary (Ledum palustre, Le 
oil ourselves... The sample of the herb that had been sent from. Silesia, was | 
rather small, it is true, but yielded a few grams of oil, so that we were able to 
de ermine the principal constituents. The yield from the faded herb amounted to 
).33 per cent. The properties of the distillate are widely different from the indications 
made hitherto concerning marsh rosemary oil‘). It was lemon-yellow and its smell 
rec called somewhat that of coriander and wormseed oils: diso 0.9189, a +4°20', 
Ip200 1.48451, acid v. 0.9, ester v. 27.0, soluble in 1 vol. and more of alcohol 90 per cent. 
| result was obtained, however, when trying to separate off ledum camphor. by 
cooling the oil for some time to about — 30°. : 
x Oi of Monarda fistulosa. The oil of the North-American labiate Monarda 
tulosa, L., has been investigated already by various authors®), recently by E. R. Miller °). 
The oil distilled in 1915 was yellow or) deep red, according to the time of the | 
ar in which it had been obtained: des0 0.928, phenol content 58 percent. The oil 
Bcti from water showed the following properties: doso 0.970,- phenol content 
28 per cent. The oil produced in 1916 showed d250 0.9253, gectul content 57 per cent.; 
he oil from the distilling water: 0.972; np 1.5045; phenol content 96 per cent. ih 
add lition to the components discovered in Hie oil peters: viz., carvacrol, p-cymene, thymo- 
hequinorie, hae and _dinydroxythymoquinone, Miller proved the presence 
7) i A Report October 1918, 33, (=?) Apparently that in St. Lucia is meant. — 3) Perfum. Record 9 
18), 303. — *) Comp. Gildemeister and Hoffmann, Die ctherischen Ole, 2.4 ed., vol. III, p. 409. — 5) Comp. 
ieister and Hoffmann, The Volatile Oils, 209 ed., vol. Ill, p. 465. — ) Cirewtar Univ. of Wisconsin No. 4, 
T AMIS; Chemist and Digs gist a bees! 494, 
3* 
Bi Bence) We therefore welcomed the opportunity, we recently had, of distilling 3 
