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Alnus My- thoughts I obferved abou| Mid-^«g«/?, the Chats 
Oiferm. of the Aider to be Gummy. 
Qu Whether it did not exudate from the Plant it felf; 
as I guefs ihe Honey fall, or Gummy Dew, to be ob- 
ferved upon the Leaves €>f theOike, are nothing 
elfe ? F. c. P. Angl. concerning Manna gathered off 
the Aft. 
The next Inflances are of Gums, which grow hard 
in time, readily diflblve in Water, and are not to be 
kindled into a Flame, though they become thereby foft 
and dudlible. 
White and The American or Indian Rhubarb Sown in our Gar- 
f^dGmA^^^i is the only Plant that I have met with, or ever 
Khabarba- faw, vvhich yielded a Gum ; and yer, becaufe it is 
^"^' of the very kind with our common Sorrels and Lapa- 
thums, I believe it not impoffible, yet even from our 
own ftore, Herb-Gums might fome ways or other be 
had. I (ay. that of the Stalk, or indeed of the Leaves 
of the hdian Rhubarb, I have gathered an Ounce at a 
time in June^ of very white and clear, and hard Gum, 
both in thofe Years I obferved to flower with us, as 1670. 
and in that Year it did not, 1659. It exudates from all 
parts of the Stalk and Ribs, on (Note well) the under- 
fide of the Leaf it felf I gathered fome in the form of 
good big Drops others, as though the Stalk had been 
befmeared with it,* others, (hot into long and twiflcd 
Wires or Icikles. Moreover I obferved, that the can- 
kered Orifices , or places where the Gum had burft 
forth, might be followed into the Stalk with a Knife, 
and that through the Skin : In certain places I could 
fee that the Juice within the Plant was turned Gummy, 
and looked clear like Ice. 
It is the Experiment of Mr. Fijher, that the clear 
and defecated Juices of moft Plants, have more or iefi 
rcdneis in them. f^. C. P. A, Tagin. 315'. App. ^flgain,. 
