Royal Society. 189 
weakning its fpring, and Co become more conveniently porta- 
ble ^ if the hole at G be filled with water, but not fo as to be 
fpherical^ all objeas, that will bear it, are feen therem more 
diftinaiy. 
^/^e Nature and 2)ifference of the Juices of Plants 5 by "Dr. 
Lifter. Phil. Tranf. N« 224. p. 3<J5- 
WE obferve generally, that the juices of plants do coagu- 
late, whether they be fuch, as are drawn from the 
wounds of a plant, or fuch as do fpontaneoufly exfudate^ and 
yet that exfudation feems to be often accidental, that is, either 
by a cancer, or Ibme other fuch like accident. 
The fmall green leaves, which next encompafs the yellow 
flowers of Androfaenum Hypericoides, Ger. are befet with very 
fmall round blebs or bags, full of a purple juice, and the very 
points or tops of the yellowifh leaves themfelves are furniHied 
with two or three of them; yet the ftalk, when cut, doth not 
to the eye, difcover any fuch diftin^l veCfels carrying that 
purple liquor 5 which made Dr. Lifler fufpeft that it was 
leparated by coagulation from the reft of the juice, and referv- 
ed in thofe fmall bags. The purple bags in the Hypericum^ 
Ger. are upon the edging, on the outfides of all the leaves 5 
alfo the ftalk, tho* round, hath a double edge, on each fide one ; 
and the bags, tho' but thinly, are yet obiervable on thefe rifing 
edges of the ftalksj as for the yellow flowers themfelves, the 
outmoft green leaves, which immediately encompafs them, 
have but few purple ftripes, but the yellow leaves or flowers 
are edged with fmall purple bags on the one fide, and ftriped 
with purple veins on the other 5 laftly, on the very tops of each 
thread in the flower, is one fingle purple bag ; In like manner 
all the edges on the outfides of all the leaves, from one end of 
the ftalk to the other of the Hypericum Afcyron dlBurn^ caule 
quadrangulo,]. B. are very thick fet with purple bagsj alfo 
in the flower, all the threads have one fingle bag on the top, 
but the flowers are yellow leaves, and the green ones encom- 
pafling them, have very few purple fpots or ftreaks vifible. 
The yellow flowers of the Hypericum pule brum traji, J. B. 
and the green leaves, which next encompafs them, are alone 
thick edged with purple blebs. Divers parts of the fame plant 
have divers faculties, U. C, P. A. And Dr. Zifler adds, that 
divers parts of the fame plant yield from the fame veins diffe- 
rent coloured juices, v.g. the milk in the root oC Spondylium^ 
Ger. is of a brimftone colour, but it is white in the ftalk. 
Amongft 
