174 
JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
CHEMISTRY OF ODOURS. 
Those interested in the chemistry of perfumes should consult 
the journals published by the pharmaceutical and chemical 
societies of England, France, Italy, Spain, and Germany, 
especially the last named, as a considerable part of the trade in 
essential oils and perfumes is now in the hands of German 
specialists. For statistics, imports, exports, &c., see the “ Board 
of Trade Returns.” 
Dugald Stewart, see “Works,” vol. iv. p. 300, for remarkable 
case of James Mitchell. 
“Encyclopaedia Britannica,” 9th or last edition, see articles on 
Perfumes, Scent, Spices, Incense, Condiments, Smell, &c. 
“ Chambers’s Encyclopaedia ” also contains much interesting 
information under above heads. 
Franck, Francois, “ Olfaction,” Diet. Ency. des Sciences medi- 
cales, -2nd series, contains a full history of the sense of smell. 
1804-54. Kitto, Dr. John, “ Cyclopaedia of Biblical Literature,” 
see Perfume, Ointment, Balm, Balsam, Spice, &e. 
Owen’s “Comparative Anatomy and Physiology of Vertebrates.” 
Ramsay, Dr. William, “ Essay on Smell and Chemical Con¬ 
stituents affecting Nerve Centres of the Nose,” &c. {vide 
“ Nature,” vol. xxvi. p. 187). 
Vintschgau, Prof. V., “ Hermann’s Handbuch der Physiologie 
d. Sinnesorgone,” zweiter Theil, “ Geruchsinne,” p. 226, &c. 
Since the above paper was written Professor Ayrton, 
President of the Physical Science Section, read a most interesting 
paper on the sense of smell at the British Association meeting 
at Bristol, September, 1898. 
LIST OF PLANTS REPRESENTED AT THE SOCIETY’S 
MEETING, APRIL 26, 1898. 
To illustrate Mr. Burbidge’s lecture the undermentioned 
specimens were kindly sent by—(1) Leopold de Rothschild, 
Esq., Gunnersbury House, Acton (gardener, Mr. Hudson) ; (2) 
