OSM 
by potafh. Although the oxyd of this metal is foluble in 
water, and its affinity for oxygen fmall, it does not change 
vegetable blues, nor Y hibit any other acid properties. 
The folution of oxyd of ofmium, like that of gold and 
filver, ftains the ‘kin permanently. 
An infufion of galls changes it toa purple colour, which 
ultimately becomes blue. 
If ether or alcohol be added to the aqueous folution, the 
oxyd is decompofed, and the metal precipitated: a fimilar 
effe& would no doubt take place by pafling es or 
{ulphuretted hydrogen gafes, through the folutio 
We are indebted to Mr. Tennant ae thefe fa&ts, which 
he made out at the time = yee hee the metal. It 
is to be regretted that no new fa ave been adde » by 
which we ae know the proponist vat its combinations 
with other bodies 
OSMOND, in 1 Biography, a faint, was born in Normandy, 
of a noble family. In 1066 he followed the fortunes of 
and 
ury. 
which form afterwards became general 
‘iesaato out the kingdom, under the name of the Sailbaiy 
liturgy. He died in 1099, and was canonized by Ca- 
lixtus ITI. 
Osmonp Royal, or Flowering Fern, in Botany. See Os- 
A 
Osm MONDS; in our Old Writers, -akind of iron anciently 
brought i me prone It is mentioned in flat. 32 
VIII. cap. 
OSMORZKOT, in Geography, atown of Ruffia, in the 
government of Kolivan, | on a rtifch ; 201 m miles W.S.W. 
of Kolivan. N. lat. 53° . long. 
OSMUNDA, in Bo od a wor ‘s no explana- 
tion has ever been given, and which Linnzus, in his Philo/o- 
phia Bot. » 160. ons as one of thofe which c 
Swartz Syn. Fil. 160. Ind. Oce. 1578 feet Ca 
174. t. 5. f. 38. ce t. 324. Juff.15. Lamarck Il- 
luftr. t. 865. f. 2 rown. Prodr. Nov. Holl. v. 1.1 
(Todea; Willd. in Mem. of the Acad. at Erfart, 
1802. i4.t.3.f. 1 wartz Syn iy Se are and 
i 
order, Craptegamia Filices. Nat. Filices. Lin 
Eff. Ch. Capfules ftalked, ne oe globol e, "femnibivalve, 
burfting a le bafe up to a ftriated dorfal protuberance, 
crowded on the back of the ste or compofing aggregate 
{pikes on its contracted {ubdivifion 
Obf. From this the genus of Fae pages of the 
Linnzan 0. Junaria and others which, like it, have bivalve 
capfules, without either ring or ftriat ed poem and 
growing on a proper ftalk diftin& from the leafy part of the 
= now feparated. Thee pee are unquettionably 
OSM 
* All the fronds Seriile. 
1. O. Claytoniana. Virginian Ofmunda. Linn. Sp. Pi. 
1521.—Frond pinnate, clothed 
artin | 
part . e are craig, a yard ahiek, nar- 
row, ¢ fed of numerous, fhort, ia alternate, deeply 
pana fl, Gace when fully grown. any 0 haeons 
bou middl of t sshtie Din are eith tally 
Claytoniana. 
2. O. regalis. Ofmund-royal, or seus fern. Linn. 
Sp. Pl. 1521. Sm l. Bot. t. 209. 
Bolt. Fil. 6. t. 5. Fil. Dan. t ea (Fits florida, five 
{munda regalis ; Il —Frond doubly pin- 
nate ; leaflets fomewhat Hegre tee 4 at their bafe ; the up- 
per ones areas and covered with big re Native of 
Europe an merica, in mar ady places. An 
ous, 
elegant fern, eantpicaoss for its ath.like leaves ; and copi 
ompound, rufty-c ay ed, clufters of capfules, crowning 
the fummit of the fro 
_ Alcan Ofmunda. Thunb. Prodr. 171. 
v. Holl - 163, by 
ourn. for 1801. 105. nn. 
Pl. 1529. Filix africana, floride ree in ambitu foliorun 
argutée denticulata; Pluk. Phyt. t. Todea afri- 
cana; Willd. Mem. Erf. for aia v5 te 3. 
S i F doubly pinnate, coriaceous, {mooth ; 
leaflets decurrent, confluent, fnew ferrated ; the lower 
ones unchanged, bearing capiules.—Native of the Cape of 
ood Hope, an w shee Wale 
a fine living fpecimen, in June 
E is fern is evidently a congener of 
ts 
Several of the /eafets neareft the main ftalk, about the mid- 
dle of the frond, are covered at the back with crowded ellip- 
tical mafles of capfules of a rufty brown, unaccompanied by 
any pubefcence. 
* * Fertile fronds feparate. 
O. cirnamomea. Woolly Ofmunda. Linn. Sp. Pl. 
(Filix non — ac dentata mariana ; 
Mant. 78. Phyt. t. 400 ronds pinnate ; leaflets 
deeply eee: “with aeons talk ; the fertile ones con- 
tracted and N me flo 
a ce) 
4. 
thes 
woolly and se snlen eel nea y eee and by fome of the 
ronds being entirely fertile, the others barren. 
ments of the aes too are fhorter and broader ; the clufters 
of capfules hair 
. O. 7a ee Japan Of{munda. Thunb. Japon. 330. 
Swartz n. 5- (Dsjemmai, Phyllitis foliis ramofis: Kamf. Am 
Exot. 891.)—Fronds doubly pinnate ; leaflets lanceolate, fer- 
rated, heart-fhaped at their bafe; the fertile onestriply pinnate. 
—Found 
