RECENT RESEARCHES 
" caryophyllea, Z. ! 
A. flexuos 
; Arrhenatherum avenaceum, Beauv. 
Holcus lanatus 
Triodia decumbens. Sn. ! 
Poa annua, 
Glyceria fluitans, R. Br. * 
Socreoblon arta Woods. 
Briza m 
Era crista = L.! 
Dac I ——— di 
moides, L. ! 
var. piue Bab. 
Dromus mollis, Z. ! 
IN THE DIATOMACESR. 
B. racemosus, et * 
- B. sterilis 
B. diandrus, aS var. rigidus, Bad, 
Brachypodium sylvaticum, Beauv. 
L. | 
the additional species a few have not been er pubis for 
m obsc d 
OI 
the Channel Islands— 
Lysimachia nemorum—though all, 
included in the dd flora of Jer 
Viola sylvatica Riviniana, Epilobium 
with the exception of the dt are 
a 
To the above may be added a few species observed in Sark by the Rev. 
W. W. Newbould in 1841-2 :— 
Papaver Rhæas, Z 
aphanus me Sm. 
Viola arvensis, Mur 
Mr. 
in the rocks i in the northern part o 
(Proc. Manch. Lit. and Phil. Soc., tri p. 19 
C. Bailey is babi to refer cr specimens 
Mentha bebes Y $. 
Linaria repens 
Juncus Mots mii Ehrh. 
s which he collected 
k to Hieracium strictum, Fries. 
1). 
RECENT RESEARCHES IN THE DIATOMACEÆ 
By tHe Rev. BUGENE O’ MEARA. 
II. 
come now to consider the most Qum IRE portion of Dr. Pfitzer’s 
abis epe to the study of the Diat 
the cell contents in 
changes they amergo during the ers ess of 
istic arrangement 
Navicu 
macee, namely, the character- 
the different groups, and the 
division 
It is to be premised ihat acco —€— s Dr. Pfitzer' s conceptions, this 
outline is symmetrical, t the valves are — 
lacuna i 
he striation on the one 
ave re- 
in t side. me pe 
able in W. sculpta (Ehren.), and N. ia rwr which fórms are 
