Royal Society. 191 
with difficulty. Dr. Lifler kept fome of it pure and unmixed 
in little eflence bottles, flopped lightly with cork only 5 in 
thefe it broke in procefs of time, and the curds were eaiily to 
be formed into cakes, which burned with a lading flame, and 
being melted, drew out into firings like wax, the whey was 
clear like fair watery this broken milk in all the bottles was 
corrupted, and flunk 3 but the cakes made up of this juice, with 
wheat flower and a little gum-arabic, was well dried and kept 
fweet. 
There are other clammy juices, which do not feparate a 
whey, when they coagulate, but cake wholly : Dr. Lifter 
made cakes of the unmixed juice of Soncbus Uvls ^ ^Jper, 
without any addition, and it did not feparate any whey. 
\Papaver Rbeas^ Ger. bleeds freely a white juice, and the heads 
or feed-vefTeis, when the flower is gone, do flill continue to 
bleed 5 Dr. Lifter obferved, that in gathering it into ihells, its 
white colour prefently became yellow, inclining to an orange 5 
atfiril fpringing it roped, or was but iirtle clammy, and feemed 
to be very liquid and dilute, yet it did not feparate any whey, 
but grew flifr'j it is very refinous and oily. 
Notej the milks or juices of plants feem to be compounded, 
and mixed of liquors of different, and perhaps contriiry qua- 
lities j fo that it is probable, if the cheefy part be narcotic, for 
inflance, the whey may not be fo^ or the one may be hurtful, 
and the other a good and ufeful medicine. 
Tragopogon flore luteOy J. B. yields a juice, which, upon the 
firft fpringing from the wound, is white and thick, but imme- 
diately turns yellow, and then redder and redder j it is of no 
unpleafant tafte, is Ibmething glutinous and oily, and feparates 
little, if any whey, and is therefore eafily formed into cakes 
alone. Coirjolvulus major, J. B. bleeds freely a white juice, 
not only from the flalk and leaves, but alfo from the white 
flowers, as plentifully as from any other part 5 this milk is very 
fharp. 
There is alfo a juice of a faftron colour, ivhich Chelldonium 
fijaius, Ger. wounded freely affords 3 this juice does not Icparatc 
a whey, but is eaiily formed into cakes, and fliftens in the 
fun 5 it IS thick, and of the confidence of cream, as it runs out 
of the wound. There is another very clammy juice of a 
golden or yellow colour, upon drawings and this liquor the 
feed-vefTels of Centaurium Imeum ferfollatum, C. B. in Jnly^ 
and after, even where the iceds, therein contained, are turned 
black and ripe, yield plentifully and freely enough. Thefe 
juicesj 
