Ipo Dr. Vaughan and 



ding to their Leaves, into ftich as have a fimple 

 Leaf, which I make to be either whole or herniated, 

 and fnch as have a compound Leaf. And thefe into 

 fuch whole Leaves are compounded of, i. Single 

 Leaves , or Pinnule. 2. Surculi pinnati , or decompo- 

 fit a. 3. Ramafiri, divided into fur 'cult and pinna ; 

 which Leaves Bauhine calls Ramofe. But to render 

 things clear, I take it to be needful to define a com- 

 pound Leaf , which I fliall do thus. A part of a 

 Plant which is made up of Pinnuke, Surculi, or Ra- 

 maftri, connected on each - fide to a middle Rib, growing 

 gradually porter and Jhorter toward the top of the mid- 

 dle Rib, which alfo terminates in a Leaf, the Foot-fialk 

 and middle Rib having its fupine Superficies different 

 from its prone, viz. either flat 'or chanePd. Thus 

 defining a compound Leaf, I exclude feveral forts of 

 compound or pinnate leaved Plants from being Phyl- 

 liiides or Hemionitides, i§c* 



Dr. Vaugjoan having given an Account of the fa- 

 tal confequences of eight young Lads eating of Hem- 

 lock water Dropwort (publiili'd in Phil. Tranf. N° 238.) 

 proceeds thus. JV. D. 



Dr. Vaughan and Dr. Wood to Mr. Ray. 



S I R, CJonmell, Augufi 16, 1696. 



AND now, Sir, I ihall take the freedom to prefs 

 you to favour the learned World with the Icons 

 i of the Plants defcribed in your Hifiory, which would ren- 

 der it the moil compleat Work of the fort the whole 

 World affords > 'tis a Work which you in your Hi- 

 fioria Plant arum exprefs an inclinablenefs to, and 

 which I am heartily forry you have not met with due 

 Encouragement to perform. Sir, I need not lay be- 

 fore you the great Difficulties which the lovers of 

 Botank are forced to encounter, by rcafon of the want 



