No. 407.—OsTREA EDULIS. Officinal the Teste, the 
shells of the common Oyster. 
Antacid; less so in their unburned state than eae: cal- 
cined,: do not ss hada from lime, and might be 2 ae 
ihe Matera Medica. Sad 
“4 Dacuts MascuLA. Male Orchis: 
morro. Fools’ stones. 
Cabin pein Jeff. Coll. No. 504—figure of the plants, 
Two gynandrous plants, yielding (chiefly the first) the Sa- 
lep or Salop of the shops; a restorative dietetic; grs. vilj 
render an ounce of -water so thick, that it will scarcely 
pass through a cloth. I have no doubt that other Orehi- 
dean plants, of which we have numerous indigenous spe- 
cies, will be found to yield Salep. They are worth inves- 
tigation, asa subject for a thesis. 
No. 409.—Ovis Arirs. The Sheep. 
Orricinat. Adeps ovillus. Edin. Sevum. Lond, Serum ovil- 
lum. Dub. Mutton suet—used in the Offic. Prep. Sevum 
ae L. to give consistence to ointments and 
No. dobre PxHastanTui GALLt. The egg of 
the common fowl. 
Made officinal by the London College; and ae vitellus, 
yolk or yelk, is used in extemporaneous | pharmacy, as a 
reconeiling ingredient in mixtures containing substances 
difficult suspension. It is noticed here, that you may 
be able to write prescriptions: correctly. 
TIES Bi 
No. 411 —Oxa.is ACETOCELLA. Waod so ; 
Cabinet specimen, Jeff. Coll. No. 507—figure of-the plant, 
— No. 508. : 
—Orricrat. Acetocella. Lond. Wood sorrel 
Its active principle is a super-oxalate of potass, which is ob- 
tained from 3 hum, the expressed juice, and when crystallized, 
is sold under the name of ce asontial Sa Salt of Lemons, used 
to take ink-spots out of linen and other white fabrics— 
diluted, has been medically used as citric acid is. The re- 
cent plant is eaten as a salad, cy oom 
oe as it Sates 3 is. 
No. 412. —OXYMEL SIMPLEX. ¥: D. (ae acetatum, 
Prb. asta a a 
