ON THE UPLAND BOTANY OF DERBYSHIRE. yal 
sag the diaphragm, and if the thread be ruptured by mechanica 
r other means, the rupture is not more frequent at the diaphragm 
‘sae elsew here. Looking a t all the facts of the case, and 
later in time than that of the protoplasmic connections, there can 
be little doubt that it isa a a pe to thos 5 connote s, and 
that, whatever be its ultimate function, it offers no interruption to 
protoplasmic continuity, so long as the cells on both sides of it are 
vitally ac 
In 8 ay I have pleasure in acknowledging my obligations 
to Professor E. P. Wright, M.D., o kindly 
encouragement and severable valuable hints, and to friend 
Mr. G. Massee, of Seatborongli, for his able ass cau in de- 
a termining doubtful species and for many valuable sugesctions 
EXPLANATION OF PLATES. 
Plate 242.—Fig. 1. Portion of axis of Callithamnion roseum, with cells of 
primary and secondary branches; the contents of the cells connected through- 
Pee orti i 
t ig. on of ultimate " Beeiehiie » with developing tetraspores 
otopl © masses connected by extre aments, on whi collar 
has not yet app ig. 3. Longitudinal section of main axis o m- 
ne re fee ted t tral and b the cortical cells 
e | 
connections e axi rti a4 tudinal secti 
of axis of Polysiphonia fastigiata, showing the pr a aks connections of the 
axial and the ——— cells. Fig. 6. Protoplasmic bodies from the axial cells 
of Ceramium eda notum. Fig. 7. Protoplasmic Bodliee: wou the cortical cells 
of Ceramium rubru 
Plate ah ofig. 6 ecient erode ase section of an old and 
stout portion of Ceramium rubru e the axial cells, and oe b the 
cortical ones. Fig. 9. Tip of bra neblet a “Ptilota ¢ elegans, ‘showing continuity 
Fi ta ele 
throughout. g. 10. Protoplasmic bodies from axial cells of Pti ilo Jans, 
Ow. eir connections with those of the lateral branches ngi- 
tud section of and stout portion of a f Ptilota elegans, showing the 
connections of the tral cells. Those of the cortical cells ot indicated 
Se of thallus of ndrus crispus. Fig. 13. Section of thallus 
. Fig. 14. Cells from inner portion o e us 
of Gigartina mamillosa. 
of Laurencia pinnatifida. Fig. 15. Section of thallus of Petrocelis cruenta. 
ON THE UPLAND BOTANY OF DERBYSHIRE. 
By W. West. 
field-botanists will hail with delight the excellent practical 
rl 
AL 
paper of Mr. Baker on this subject. I was particularly pleased, as 
Irambled over some of these uplands some time ago, but did not at 
_ that foes carry an aneroid with me, and I have in vain tried to 
obtain some of the elevations snes ed from ordnance maps. 
The “Sissi additional facts may be interesting, as a small 
be at to Mr. Baker’s able paneer: 
halictrum montanum. Millers Dale, 850 yds.; Cave Dale, 
350 cial g flavum, Monks Dale, 850 yds, 
