— 77 — 
the Monte Portofino near Genoa, whence the material worked up by 
us was also derived. We obtained from 20,2 kilos herb 15,3 grams 
= 0,075 cent, of a yellow-brown oil of the specific gravity 0,9182 
15°; «D = 4~^°4^'^ acid number = 14,4; ester number = 1 1 8, 1 6. 
In 90 per cent, alcohol it dissolved at first clear, but the solution sub- 
sequently became cloudy with abundant separation of paraffin. The 
paraffin had the melting point 67°. 
Two species of Ctsius, whose leaves we have distilled on account 
of their fragrancy, also originated from the Mediterranean Countries, 
— in this case from Spain. Both oils are distinguished by an aroma like 
ambergris, and in this respect they resemble an oil which we produced 
a long time ago from Ladanum, the resin of another species of Cistus. 
Oil from Cistus monspeliensis (Cistaceae). Yield 0,015 per 
cent. ; \r,o = 0,9786; — -|- 1^40'; acid number = 15,7; ester 
number = 3 1,5 1. The light brown oil separates off between 20° 
and 25^ abundant quantities of paraffin of the melting point 64°. 
Oil from Cistus salviifolius (Cistaceae). Yield 0,024 per 
cent; d^go = 0,9736; == -f- ^7° -^^'i number = 16,86; ester 
number = 22,73. This oil is yellowish green, and behaves like the 
one mentioned before with regard to the separation of paraffin. 
Spanish Oils of Orange-blossoms, We are indebted to a 
Spanish firm for the receipt of two Spanish oils of orange-blossoms, 
one being a distillate from the blossoms of the bitter orange, and 
the other from the sweet orange. The properties of these two oils 
were as follows: — 
Neroli Bigarade. dj^go = 0,871; = -|- 10° 54'; acid 
number = 1,37; ester number = 37,67; methyl ester of anthranilic 
acid: 0,5 per cent; soluble in 1,5 vol. 80 per cent, alcohol and more; 
the dilute solution shows fluorescence and is rendered cloudy by paraffin. 
Although the odour of the oil is exactly like that of the French 
distillate, the delicacy of the aroma is far behind that of the latter. 
Neroli Portugal. d^50 = 0,8571; = + 42^ 47'; acid 
number = 1,6; ester number = 6,86. The oil does not dissolve in 
80 per cent., but dissolves readily in 90 per cent, alcohol. The 
alcoholic solution shows fluorescence, and after a time a minute 
separation of paraffin. Whilst French neroli Portugal, according to 
Theulier^), is free from methyl ester of anthranilic acid, we found 
in the Spanish oil 0,3 per cent, of this ester, which we identified 
further by the benzoyl compound melting at 100^ to 102°. 
^) Bull. Soc. chim. III. 27 (1902), 278. 
