366 TWO NEW FERNS FROM JAPAN. 
The ash was thus constituted :— 
Per-centage in ash of White parts. Green parts. 
Potash i 45°05 12°61 
Lime . ‘ 10°89 39°93 
Magnesi 3°96 4:75 
Pheephors pent. 
xide 14°55 8°80 
above figures seem to show that the white leaves, or parts of 
— of this Maple differ from the green leaves much in the same 
way that young leaves differ from old. In the former water is more 
abundant, while their ash is richer in seat and phosphorus pent- 
oxide, and poorer in lime. But other norte must be studied before — 
‘any general sadiesins as to the chemistry of variegation can be 
safely drawn. Such studies are in progres and the results, thus far 
obtained, corroborate those which I ve just given. It will be inte- 
pris 2 to compare the chemistry of aibioerion with that of Satin: and 
hlorosis. 
TWO NEW FERNS FROM JAPAN. 
By J. G. Barer, F.L.S. 
Tue two following Ferns in Mr. Bissett's first collection are, so 
far as I am able to ascertain, new species 
Lastrea) Bissertanum, Bak —Stipe a foot long, 
with black linear scales, those of the base cote an inch long. Lamina 
mate segme’ ; 
medial. Involucre large, membranous, glabrous. 
Hab.—Miyanosh’ta. May. Cutting like that of WV. Aiport 
NV. . Remarkable for its copious and very peculiar 
\\se* Porypoprum (Phegopteris) oramensn, Baker.—Root-stock setae 
wide-creeping, bearing a few small pale bro own Meer scales on 
exposed Stipe slender, naked, 2-3 in. long. Lamina del- 
toid, try epay glabrous, naked, about 3 in. so, simply pinna- 
tifid, eut down to the main rachis into linear-oblong pinne of which 
lowest anterior veinlet of each group. 
ae ass yama. cutee Remarkable for its ‘sal little-com- 
