


148 The Anatomy Book IV: 


CHAP. IL 

Of thofe things which appear upon the Surface 
of the Leaf. 




SHES E are Globular Excrefcences, Spots, Hairs, 
F Thorns and Prickles: of all which, except Spots, 
2% I have {poken in the Appendix to the Chapter of 
Leaves in the Firft Wook, 
2. §. Ofthe Globulets, it may here be fur- 
2) ther noted, That thofe which are white, and lie 
ye. fometimes like a fine Powder upon the Leaf, 
Y i wy) 5 were once tranfparent, as in Bears-Eear ; their 
SO SISSAS? cleer Liquor beeing now evaporated to anE xtra 
Tab. 43. OF White Flowers. This, if licked off, will give you the Taf of the 
more Effential Content of the Plant; different from that perceived in 
chewing the Leaf: 
3. §. For the obferving of them, it may alfo be noted, That al- 
though they often grow on both fides the Leaf alike ; yet fometimes, 
as in Ground-Ivy, only or chiefly on the Back-Side.. And that in many 
Plants,where the elder Leaves have none 5 onthe young Buds they are 
very numerous 5 as in Corin Tree, Sorrel, and others, 
4. §. AS for spots, the fmaller ones are obfervable not only in 
St. Fohus-worts, (in which Plant only they are commonly taken no- 
Tab. 43. tice of ) but alfo in Rue, Ground-Ivy, Pympernel or Anagallis, and 
divers other Plazts, when held up againft the Light. The original 
whereof feems to be, at leaftin fome, from the Globulets above men- 
tioned; that is, when they break and dry away. So the Spots of Rue- 
Leaves,which in the Reflection of Light look black ,but upon the Trajedti- 
ow thereof are tranfparent , are {fo many little Holes, pounced half way 
through the thicknefS of the Leaf, and feem as made, by the breaking 
and drying away of as many Globulets. Whence alfo, asthe Globulets 
are belt {een in the younger Leaves, fo thefe Spots in the elder. 
5. § BESIDES theft, and fome others ¢ as thofe in Ladies 
Thiffle) which are Natural to the Leaf; there are alfo fome Spots, of 
Tab. 43. rather Streaks, which are Adventitions 5 as thofe in the Leaves of Sons 
chus. The Caufe whereof, isa {mall flat Ine, ofa grey Colour, and 
about +h of an Inch long. Which neither ranging in bredth, nor 
ftriking deep into the Leaf; eats fo much only as lies juft before it, 
and fo runs fcudding along betwixt the shiz and the Pulp ofthe Leaf’; 
leaving a whitith Streak behind it, where the Skiz is now loofe, as the 
meafure of its Voyage. 
6. §. THE Original and feveral kinds of Thorns, I have deferib'd 
in the above faid Appendix. 1 only add, that the very Leaves of fome 
Plants, if they ftand till the fecond year, are changed into fo many 
Thorns, asin the Furz. 






































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