w. 



Of the distinctions of these I shall by and bye give 

 you some account ; for the present, I must leave you 

 till you have examined for yourself, as you easily 

 may, the highly singular phenomena I have explained 

 to you. 



EXPLANATION OF PLATE X. 



L The Marvel of Peru Tribe. — 1. A flower of the Common 

 Marvel of Peru (Mirabilis Jalapa) ; a the tliickened base of the calyx. 

 — 2. The same part magnified, with the upper part of the calyx cut 

 away. — 3. The fleshy base of the stamens a, from within which rises 

 the thread-shaped style, terminated by the stigma b. — 4. A perpen- 

 diciUar section of the fleshy base of the stamens and pistil; a the 

 base of the separate parts of the filaments; b the base of the style; c the 

 ovule seen in consequence of a part of the shell of the ovary being cut 

 away. — 5. Anthers. — 6. A ripe nut; a the closed up orifice of 

 the calyx. — 7. A pei-pendicular section of the nut, shewing the fruit 

 standing erect in the inside of the hardened base of the calyx; c the 

 base of the style; a the radicle, and b the cotyledons of the embryo 

 rolled round the mealy albumen d. 



IL The Oak Tribe. — 1 . A twig of Hazel (Corylus Avellana) ; a 

 the stamen-bearing catkins; b the buds containing the pistils. — 2. A 

 scale of the catkin, shewing the two-lobed body, and the stamens. — 

 3. A cluster of pistils bearing flowers, in a very young state, with only 

 one of the scales by which they are protected remaining. — 4. A pistil- 

 bearing flower, inclosed in its involucre. — 5, The same cut open; a 

 the calyx. — 6. An ovary divided perpendicularly; a the calyx. — 7. 

 The same divided horizontally. — 8. A ripe nut in its husk, or in- 

 volucre. — 9. A nut cut through perpendicularly; a the remains of 

 style ; b remains of calyx; c cotyledons; <?plumuia; e radicle. 



L 2 



