INTRODUCTION: 
§ 4. 
That science which teaches us to distinguish one 
plant from every other, and leads us to the know- 
ledge of its properties, is called Botany, ( Botanice, 
Botanica, Scientia botanica, Phytologia, Botanologia. ) 
Yo-teach this science properly, we must make the 
student acquainted with every particular part of a 
plant, and its use. ‘This is the purpose of the fol- 
lowing work: but before proceeding, we must pre- 
mise a few necessary hints and general observations. 
| SO 
The fitst object of a student of Botany, after be- 
coming acquainted with the Terminology, is to ac- 
quire an accurate knowledge of every plant as it 
comes in his way. He must possess what may be 
called a botanical eye, that he may be able to ex- 
amine, with readiness, the stem, the leaves in all 
their varieties, the mode of inflorescence, and all the 
other conspicuous parts of a plant, so as to distins 
guish it with accuracy from those which resemble it. 
In this way he learns to know plants by their exter- 
nal appearance or habit (habituss) With this know- 
ledge; however, he must not be contented, but en- 
teristic marks of the animal kingdom, particularly of the larger 
animals, But there are certain plants which are ehdowed with 
voluntary motion, and which, in some respects, remove from 
- one place to another, nor ¢an any Oné shew us in the infusory 
animals, or ini those allied to them, which resemble tlte Con-~ 
fervas, the Tremellas, and other small! plants, the organs ap- 
propriated for the reception of tbe food or its discharge ? 
A? deavour® 
