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JUL 5 1916
CONTENTS OF No. XXXI.
TRANSACTIONS OF THE ROYAL MICROSCOPICAL SOCIETY,
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« We do not hesitate to say that by a careful use of
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A MANUAL OF BOTANIC TERMS.
By M. C. COOKE.
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DR. LANKESTER ON FOOD, AND ON THE USES OF ANIMALS,
in Relation to the Industry of Man.
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MONTHLY MICROSCOPICAL JOURNAL.
JULY 1, 1871.
I.—On Bog Mosses. By R. BRAITHWAITE, M.D., F.L.S.
Part I. FOR a considerable time the plants known as bog mosses have attracted attention, not only by the masses in which they are found growing, but by their peculiarity of structure, and the difficulty of finding characters by which to establish the species, for the varieties are endless, and such a common facies is impressed on the whole group that Linnæus regarded them all as one species, which he named Sphagnum palustre. In our own time, however, the careful use of the microscope has revealed to us their wonderful organization, and enabled us to establish many species.
Up to the publication of Professor Schimper's magnificent treatise,* the bog mosses had been universally associated with the other mosses in one class, but in that work they are placed apart, and
EXPLANATION OF PLATE XC. Fig. 1.-Prothallium with young plant. , 2.-Sphagnum cymbifolium. Vertical section of stem passing also through two
leaves, and the base of a branch fascicle. , 3.- Ditto. Transverse section. These show the pith, the woody cylinder,
and the four layers of bark cells. ... 4.-Cells of pith,
5.-Ditto of wood. 6.-Ditto of bark. 7.-Cells of a branch leaf of S. cymbifolium. 7x.—Transverse section of a leaf of S. squarrosum. , 8.-Cells of a branch leaf of S. acutifolium, seen from the back.
82.-Transverse section of same. ,, 9.-Male flower catkin of S. cymbifolium. ,, 10.-Ripe antheridium with paraphyses. „ 11.- Vertical section of a capsule still enclosed in the calyptra. c, calyptra ;
$, cavity of sporangium; P, pedicel of capsule enveloped by the
vaginula. (Fig. 1 from a specimen lent by Mr. Howse, the rest from Schimper's work.)
* " Entwickelungs-geschichte der Torfmoose,' 1858. VOL. VI.