THE SECOND PART. 
the only book from which an Englifh Botanift can completely 
learn the fcience of Botany. Determination of leaves ex- 
plained. Belongs to Ample and compound leaves equally. 
Alternate leaves lhown in Ivy-toad flax. 239, Opfojite leaves, 
in Myrtle. Manner of leaves being placed on the fiem com- 
mon to the whole Genus. Direction of leaves explained. Va-? 
rious modes of direction muft be ftudied. Infertion, a general 
term for the manner in which leaves are attached to plants. 
Each mode has an appropriate term; thefe terms well ex- 
plained in the Syftem of Vegetables. Double flowers, feme 
knowledge of them requifite for young Botanifts. 240, Double 
powers, the pride of florifts, the product of culture. Vulgar 
errour of gardeners refpecting double flowers. Completely 
double flowers lofe their ftamens. Various modes of vegetable 
monfters being produced. Calyx and lower row of petals 
unchangeable in double flowers. Half-double flowers bear 
fruit. 241, Hofe-in-hofe Polyanthos, a proliferous flower. 
Hen-and-chicken Daifie, a beautiful vegetable moniter. Ex- 
traordinary change caufed in Rofe Plantain, by becoming 
double. Flowers multiply by their nectaries 3 become double 
in various ways. Provence Rofe deftitute of ftamens. Damafk 
Jlofe does not lofe it's ftamens by becoming double. Many- 
petalled flowers raoft liable to become double. One-petalled 
flowers rarely multiplied beyond a double corol. Beauty of 
compound flowers increafed by multiplying. Single flowers 
generally more beautiful than double' ones. 242, Various 
caufes from which plants depart from their true fpeciesj 
culture the moft prevailing caufe. Fruits and efculent vege- 
tables derive their excellence from the art of gardening. 
Culture the beft teft of a true ipecies. Ingenuity and induftry 
of mankind confpicuous in the culture of corn. Botanifts fhould 
attend to diftinctions arifing from feedlmg varieties. Varieties 
of plants not noticed in the Syftem of Vegetables, marked in 
the Species Plantarum with a capital B. Leaves fubjedt to all 
the varieties which take place in flowers ; 243, undergo ex- 
traordinary changes in their appearance, Many changes in. 
Jeaves may be effected by art. 
N0TE 3 
