I Q Principles of Classification. 
the receptacle of the flower is above the germen it is 
called superior* and when the receptacle is below the 
germen it is called inferior. The number of petals fur- 
nishes discriminative marks for the division of the gene- 
ra of the 13th class into sections. In the 14th class, 
Bidynamia, the character of the sections is derived from 
the calyx, which is said to be two-lipped, or bilabiated, 
when the mouth resembles two lips, and cleft when it is 
divided into so many parts. The pod being notched at 
the point, or being entire, in the first order of the 15th 
class, is the foundation of two sections; and the calyx 
being closed or open, affords characters for the two 
sections into which the second order is divided. The 
first order of the fourth class, in Dr Smith’s Flora Bri- 
iannica , exhibits a good illustration of this division into 
sections. This order consists of five sections ; In the 
first the flowers are monopetalous, one seeded, and su- 
perior ; in the second, they are monopetalous, two-seed- 
ed, and superior ; in the third section the flowers are 
monopetalous, many-seeded, and inferior ; in the fourth 
section the corolla has four petals ; and in the fifth the 
flowers are apetalous, or want the corolla. An exam- 
ple of the distribution of the species belonging to the 
genus veronica, or speedwell, may be taken from the 
same work. This genus is divided into three sections, 
including, first, those species which have flowers in a 
spike ; second, those whose flowers grow in clusters ; 
and, third, those which have solitary flowers. 
Method of investigating the Class, Order, fye. 
of a Plant . 
The principles of the Linnaean classification being dis- 
tinctly understood, the examination of plants, for the 
