[1771] On Japanese Peppermint Camphor see Beckett and Alder Wright, Yearbook of Pharm. 1875. 605.
[1772] Pharm. Journ. Feb. 25, 1871. 682.
[1773] Pharm. Journ. x. (1851) 297. 340; also Warren in Pharm. Journ. vi. (1865) 257. To these papers and to personal inquiries we are indebted for most of the particulars relating to peppermint culture at Mitcham.
[1774] Only the larger growers have stills. These they let to smaller cultivators who pay so much for distilling a charge, i.e. whatever the still can be made to contain, without reference to weight. Hence the dried herb is preferred to the fresh, as a larger quantity can be distilled at one time.
[1775] To whose paper On the Peppermint Plantations of Michigan in the Proceedings of the Americ. Pharm. Assoc. for 1858, we owe the few particulars for which we can here afford space.—To be farther consulted, same Proceedings, 1876. 828.
[1776] Journ. de Pharm. viii. (1868) 130.—Abstract from Roze, La Menthe poivrée, sa culture en France, ses produits, falsifications de l’essence et moyens de les reconnaître, Paris, 1868. 43 pages.
[1777] Todd, Proceedings Am. Ph. Ass. 1876, 828.
[1778] Maisch, American Journ. of Pharm. March 1870. 120.
[1779] Pennyroyal, in old herbals Puloil royal is derived from Puleium regium, an old Latin name given from the supposed efficacy of the plant in destroying fleas (Prior).
[1780] The native Pennyroyal is however a different plant, namely Hedeoma pulegioides Pers., figured in part 21 (1877) of Bentley and Trimen’s Med. Plants.