Extract of orris, 1/2 pint. " vitivert, 1/4 " " santal, 1 " " rose, 1/2 " BOUQUET DU ROI. Extract of jasmine, } " violet, } from pomade, of each, 1 pint. " rose } " vanilla, } of each, 1/4 pint. " vitivert, } " musk, } of each, 1 oz. " ambergris, } Otto of bergamot, 1 oz. " cloves, 1 drachm. BOUQUET DE LA REINE. Esprit de rose, } from pomade, of each, 1 pint. Extrait de violette, } " tubereuse, 1/2 " " fleur d'orange, 1/4 " Otto of bergamot, 1/4 oz. RONDELETIA. The perfume bearing the above name is undoubtedly one of the most gratifying to the smelling nerve that has ever been made. Its inventors, Messrs. Hannay and Dietrichsen, have probably taken the _name_ of this odor from the _Rondeletia_, the _Chyn-len_ of the Chinese; or from the R. odorata of the West Indies, which has a sweet odor. We have before observed that there is a similarity of effect upon the olfactory nerve produced by certain odors, although derived from totally different sources: that, for instance, otto of almonds may be mixed with extract of violet in such proportion that, although the odor is increased, yet the character peculiar to the violet is not destroyed. Again: there are certain odors which, on being mixed in due proportion, produce a new aroma, perfectly distinct and peculiar to itself. This effect is exemplified by comparison with the influence of certain colors when mixed, upon the nerve of vision: such, for instance, as when yellow and blue are mixed, the result we call green; or when blue and red are united, the compound color is known as puce or violet. Now when the odor of lavender and odor of cloves are mixed, they produce a new fragrance, _i.e._ Rondeletia! It is such combinations that constitute in reality "a new perfume," which, though often advertised, is very rarely attained. Jasmine and patchouly produce a novel aroma, and many others in like manner; proportion and relative strength, when so mixed, must of course be studied, and the substances used accordingly. If the same quantity of any given otto be dissolved in a like proportion of spirit, and the solution be mixed in equal proportions, the strongest odor is instantly indicated by covering or hiding the presence of the other. In this way we discover that patchouly, lavender, neroli, and verbena are the most potent of the vegetable odors, and that violet, tubereuse, and jasmine are the most delicate.