I860.] FLEMING SOCIETY OF NATURAL SCIENCE. 85 



tuJFts. Sepals oblongs hispid. Petals oblong, their lobes slightly 

 spreading. Pedicels twice as long as the silicles, these are linear- 

 oblong, nearly four times longer than wide, narrowed at both ends. 

 Seeds oval, pale brown, a little rough, about forty to the cell. 



Dry open places. 



6. E. majuscula, Jord. Leaves ashy-green, oblong-oboval, a 

 little pointed, wedge-shaped at the base, with a petiole slightly 

 narrower than their own breadth, entire or more usually bordered 

 with strong teeth, clothed with short, thickly set bi- or tri-furcate 

 hairs. Flower-stalks often hispid in their lower half. Sepals 

 rounded, oval, little hispid at their summit. Petals large, nearly 

 three times the size of the calyx, oboval, veined, with wide obtuse 

 lobes. Silicles moderately broad, about half as long as the pedicel, 

 oblong-elliptical, a little narrowed at their base, tipped with a 

 prominent style. Seeds oval, pale-brown, finely covered with 

 asperities, about forty in each cell. 



Dry sandy places. 



The six plants are thus divided dichotomously : — 



1 . Lobes of the petals more or less apart, spreading 3 



Lobes of the petals nearly contiguous 3 



2. Silicles rounded, very obtuse at the top E. brachycarpa. 



Silicles oblong, much narrowed below E. hirtella. 



3. Leaves linear or lanceolate, narrow 4 



Leaves oblong, oboval E. majuscula. 



4. Sepals oval, silicles oblong-elliptical 5 



Sepals oblong, silicles linear oblong E. stenocarpa. 



5 . Pedicels hardly 3 times the length of the silicle . . . E. glabrescens. 

 Pedicels 4-5 times as long as the silicle E. medioxima. 



(Prom Boreau, ' Plore du Centre de la Prance,' ed. 3, p. 64, etc. See 

 also Baker, in « Phytologist,' N.s. vol. ii. p. 501 : 1857-1858). 



PLEMING SOCIETY OP NATUEAL SCIENCE. 

 New College, Edinburgh. 



This Society met, Tuesday, 24th January, — W. B. Thomson, 

 Esq., President, — when Mr. Crossby, M.P.S., read a paper on the 

 relation between plants and animals. Mr. Crossby first showed 

 the vagueness of the common distinctions of these two kingdoms, 

 and then chemically and physiologically traced the essential dif- 



