LXXIV OUTLINES OF BOTANY. 
or simple microscope, with a stage ae ee a glass plate, upon which the 
oe may be laid; and a pair of dissectors, one of which should be 
w and poi ointed, or a mere point, like a thick needle, in a handle 
Sie. siiee should have a pointed blade, with a sharp edge, ‘to make clean 
sections across the ovary. com eet eer is “rarely necessary, 
except in cryptogamic nie and y able anatomy. For the simple 
aia lenses of 1/4, 1/ le and His 2 inches focus are sufficient 
To assist the it in determining or ascertaining the name of 
a stant ree to a Flora, os tables should 36 prefixed to the 
Orders, Genera, and Species. Thes es should be go se bard be 
contain, aided ont Grek s or encanta indented, two (ra 
more) alternatives as nearly as possible contradictory or ne chet ey Ww with 
each other, each alternative referring to another bracket, or having under 
iv 
iy 
: and put him the 
a. ig — vary within limits which it is pe very difficult to 
ords, and it proves often impo ssible, in framing these 
sekivtar ashlee? so to divide the genera and species, that those toro 
m 
@ 
RD 
oth h 
doubtful cases both alternatives must be tried before the stude ae can 
come to the conclusion that his plant is not contained in the Flora, or 
that it is erroneou usly described. 
246. In those Floras wie ere pusnes tables are not given, the student 
is usually guided to the most i 
diagnosis. sometimes the important characters are only indicated by 
italicizing them fe ihe detailed description. 
247. It may ry happen that the specimen gathered may present some 
occasional or ace idental anomalies peculiar to that single on ne, or to a very 
few individuals. which may prevent sgt spe 
os Pee this pur e may di them i two classes, viz.: 
rrations from the ordinary type or appearance of a species for 
ae some general y bea “ .. Aiea : 
ea 
A bright, light, and open situation, particular! i: 
tions above the sea, Sy cularly at considerable elev 
or at high lalbaded without too much wet or drought, 
