388 
THE RANK ASSIGNED TO SOME SPECIES OF FERNS, 
salt soluble in alcohol, whicli is probably a sul- 
{•ho--'a!t analogous tn tlie su ! plio-iiaplitlialales, 
Hydio-clilorate o! chioio-na()luliale?e coo'ists 
ot'carbon ,44'79. livdioaen 2'70 ehloiine 52‘51. 
8. lUlO.MO-NAPli niALASE.— W lien 
a few drops of bi oinine aie poured upon napli- 
tlialine a lively action ensue-, lieai and liydio- 
broniic acid are diseni;a"ed, and aii oily pio- 
duct is formed. This consists of cai lain 50 9. 
hydrogen 2 9. 1 roinine 46’2. 1 liis oil is evi- 
dently a mixture of two substances, the first 
of which has not been separated, but the se- 
cond. 
9. BROMO-NAPH l’HALESE may be 
obtained by distilling a mi.Ktuie ofbiomine 
and naplilhaline. Id ydrobiomic acid, a bro- 
mine oil, and charcoal come over, and towards 
the end oflhe process crystals of hromo-napli- 
thalese apjieai . d hese are formed most com- 
pletely when the bromine has been addeil in 
excess to the naphthaline. In dissolving this 
pioduct in alcohol and evaporating, we obtain 
six-sided prismatic neetlles. Tney are white, 
insoluble in water, volatile, very soluble in 
alcohol and ether. '1 hey consist ofcaibon 
42'9, liydiosren 2'1 , bromine 55, 
10. JiHOMIUE OF CHLOllO-NAPfl- 
TllAEliiSE is formed by irouring biomine 
upon chloro-naphthalese in a close flask. 'J'he 
latter dissolves and solidifies into a crystalline 
mass. When purified by alcohol iiie-ei-nbles 
the chloride of cliloro-naplithalese, and con- 
si.>ts of carbon 2l’5, hydrogen 1*05, chloiine 
and biomine 74‘45. 
11. N1 1 KO-NArUTIIALASE i.s form- 
ed by the action of boiling nitric acid upon 
najdithaline. A new oil is obtained fir-t, 
which so’idifies very slowly by cooling, foim- 
ing a crystalline mass of large needles. It 
Consists of two bodies very soluble in alcohol 
and ether, the one is solid or niti o-na plithalase, 
tile othei IS li([uid. 'I'he foimer is expressed 
between folds of laper. It is then dissolved 
in alcolioi. On cooling, drops subside to the 
bottom of tlie vessel, containing much nitio- 
iiaphthalase, which is sepaiaitd by solution 
in alcohol. 'i he alcohol lets fbU cry.sials. 
1 iiey aie fmir-sided piisn.s leiininaitd by 
acute pyramids. Colour sulphui-yellow. 
Volatile. Insoluble in water ; very soluble 
ia alcohol and ether, Auaiysis gave catbon 
69 86, hydiogen 4 07, azole 8'53, oxygen 
17-54. 
(To be continued .) 
THE TRANSACTIONS OF THE LIN- 
NEAN SOCIETY OF LONDON. 
V^. XVII, part 3rd, 1836“. 
The number of communications in this 
portion of the transactions amounts to 12, 
most of which are important. 
BOTANY. 
REMARKS ON SOME BRITISH 
FERNS. 
By Mr. David Don, Lib. L. S. 
The object of this paper is to determine 
how far some species of ferns recently added 
to the British Flora, merit the rank which 
has been assigned to them. 
Aspidium dumetorum, of Smith he has 
ascertained to be merely a diseased state of 
A. dilatatum, which is shown by the sudden 
termination of the costae, and by the partial 
decay of the other segments. 
Nephrodium rigidum turns out to be 
the same with the plant of Swartz. It dif- 
fers from N. dilatatum and N. spinulo • 
sum, in having larger and more crowded sori, 
and a broader and more depressed indusium. 
The fronds are lanceolate and both the 
stipes and rachis are copiously clothed with 
long narrow ramentaceous scales, as in as- 
pidium aculeatum. In dilatatum and spi- 
nulosum the rachis is nearly naked, and the 
stipes is furnished with fewer and broader 
scales. From N. felix mas it is distin- 
guished by its more delicate fronds, having 
the pinulae pinnatified and a more scaly 
rachis. 
Asplenium filix foemina is observed in 
the shape of two different varieties, but 
neither of them are entitled to be regarded 
as a distinct form. 
Cgstea dentata or Polypodium dentatum 
of Dickson, who first distinguished it from 
fragilis, inhabits Clova, and appears pecu- 
liar to the Scottish Alps. 
Cgstea regia. Contrary to the opinion of 
Hooker, Mr. Don considers this plant dis- 
tinct from a/joma, being characterised by its 
more compact frond, by its shorter, broader 
and cuneiform segments, by the still more 
important characters of its more copious sori, 
and of its narrower and tapering indusium. 
In the Alpina the segments are linear and 
the sori much fewer, being mostly solitary 
on the lobes, and the indusium broader, 
truncate, and not taper pointed. No Bri- 
tish station now exists for this plant. 
DESCRIPTION OF FIVE NEW SPECIES 
OF THE GENUS PINUS, DISCOVER. 
ED BY DR. COULTER IN CAUFOR- 
NIA. 
By Mr. David Don, Lib. L. S. 
Notwithstanding the addition of seven new 
species to this genus, by Mr. Douglas, wdth- 
in the space of a very few years, we have in 
this paper a detail of the character of five 
additional species discovered by Dr. Coulter, 
in California ; especially on the western flanks 
of the northera Andes, and the extensive 
parallel ranges of mountains which extend 
from south to north through that country. 
1. THE P. COULTERI rises to the 
height of 8o or 100 feet at an elevation of 
from 3000 to 4000 feet above the level of the 
sea ; growing intermingled with the P. Lam- 
bertiana on the mountains of St. Lucia, 
near the Mission of San Antonio, in latitude 
