Monthly Microscopical! 
Journal, Sept. 1, 1869. J 
Floscularia coronetta. 
133 
(fresh) ; Sloe (fresh) ; Tea (dry) ; Hyoscyamus (dry) ; Senna (dry) ; 
Digitalis (dry) ; and Eed Bark (alcoholic). 
" I think you will agree with me that these are very important, 
interesting, and novel experiments, and well worthy of being followed 
up. I can arrive at no solution of these facts as yet, and cannot see 
ichy solutions which have such equally green tints to the eye, should 
present such diverse optical effects. There must be some cause, and 
the most probable is the existence of different substances in these 
leaves. . . . 
"W. BiED Herapath." 
The foregoing conveys, however, but a very inadequate idea of 
the labour which Dr. Herapath had devoted to the subject. He 
had, it appears, analyzed optically upwards of 250 solutions ; and 
in his rough MSS. he enumerates no less than fifty-four plants in 
the Fourth (or three-barred) Group. This list is appended, as it 
may be of service to future investigators ; but it is obvious that we 
have now no means of knowing whether each individual of the 
series had been as fully worked out and verified as those given in 
the Hthographed chart. 
Laurestinus, Cucumber, Bay, Aconite, (Enothera biennis. Willow, St. 
John's Wort, Bed Bose, Everlasting Oak, Scrophularia nodosa, OaJc, 
Foreign Oah, Edible Chestnut, Horse-chestnut, Bed Horse-chestnut, Larch, 
Maple, Alder, Lime, Birch, Walnut (leaves), Ficus, Bucldhorn, Nut, 
Holly, Bed Bark leaves (ethereal), Bed May, Wild Service Tree, 
Laurel, Cherry-laurel, Virginian Creeper, Wild Baspberry, Badish, 
Horseradish, Bhubarb, Dock, Secale, Beet-root, Blackberry (old), Iris, 
Bed Lily, Lily of the Valley, Fern, Senecio Jacobea, Gallium album. 
Purple Sow-thistle, Periwinkle, Willoio Herb, Cicuta virosa, Malva Mos- 
chata, Lamium Purpureum, Solanum Dulcamara, Wild Sage, Stork's-bill. 
II. — Floscularia coronetta, a new Species; with Observations on 
some Points in the Economy of the Genus. 
By Charles Cubitt, Assoc. Inst. C.E., F.K.M.S. 
Plates XXIV. and XXV. 
My attention has long been directed towards an investigation of the 
mechanical actions of the vibratile cilia in the Botifera, having 
failed on all occasions to recognize in what I observed, the effects 
that should properly result from the actions described by others. 
For instance, in Melicerta, Mr. Gosse writes* that "The ciliary 
vortices produced by the waves of the coronal disc pass together 
through the upper sinus, and are hurled in one stream along the 
* ' Phil. Trans.,' 1856. 
