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IMTKODUCTION TO BOTANY.

BUD. MEASURE.

VERNATION involute, involuta, the edges spirally turned in on theupper surface, on both sides.

Equitant, equitanlia, approaching with their opposite mar-gins, so that one includes the other.

Obvolute, nbvoluta, with respect to the upper surface withthe sides approaching, so that each side shows a dif-ferent leaf.

Plaited; pticata, bent into various folds.

Spiral, circinalis, bent into a transverse spiral line, so thatthe point is in the centre.

MEASURES.

A line, linearis, the breadth of a moonlet, at the root of the finger-nail,

(not the thumb.)Half-an-inch, unguiadaris , length of a nail.An inch, pollicaris, length of the last joint of the thumb.A hand, palmaris, the length of the breadth of the hand.Six inches, spithamceus, the space between the points of the thumb

and the first finger when extended.A span, dodrantalis, the space between the points of the thumb and

least finger when extended.A foot, pedalis, from the bend of the elbow to the base of the thumb.Six feet, orgyalis, the length of a man.

I should advise the student to take the above terms so far into con-sideration as to know their application generally; from which hewill be enabled to understand most of our elementary books that hewill meet with. There are other definitions which it will probably henecessary for him to consult in his botanical practice; and for whichpurpose I should advise him to use Martyn's Language of Botany, orMilne's Botanical Dictionary, where he will find all the differentterms more fully explained. It would swell this small work too muchto enter into a complete lexicographical history of the language of Bo-tany, a knowledge of which may be thus easily and better acquired as-he proceeds in his study of plants.