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died. Upon a transverse section being made of the stem it was found 
that nine concentric rings liad been formed in the year, contrary to the 
theory of only one being formed annually. Mr. Leipner entered into 
an explanation of the cause of these appearances in the stem, but said 
that without further information it would be premature to come to a 
result which would be antagonistic to preconceived theory. 
Mr. Leipner made a verbal communication on " The Mosses of the 
Bristol District." He said the locality seemed, as far as it had been 
worked, to be a very productive one for the study of Muscology, and he 
had been led to the investigation of it two or three years ago in conse- 
quence of having it in contemplation to publish a work on this branch of 
Botanical science. On one day in January he discovered, in Leigh 
Woods, thirty-nine species and two varieties, and altogether the district 
yielded about one hundred species, most of which he had discovered 
himself, and the remainder had been found by Miss Attwood. There still 
remained several portions not yet thoroughly investigated, and, as some 
mosses are extremely local in character, it was thought that more might 
yet be discovered. The narrow limits of the habitat of Grimmia orbicularis 
and of some other rare species was noticed. Mr. Leipner accompanied his 
remarks with a specimen of every species hitherto found in the neighbour- 
hood, of which the following is a list : — 
Phascum cuspidatum 
Pleuridium subulatum 
Wessia viridula 
mucronata 
cirrhata 
Dicranella varia 
„ heteromalla 
Dicranum fuscesceus 
„ scoparium 
Lencobryum glaucum 
Fissidens bryoides 
„ pusilluo 
incurvus 
„ adiantoides 
„ taxifolius 
Pottia truncata 
Didymodon rubellus 
Ceratodon purpureus 
Leptotrichum flexicaule 
Trichostomum rigidulum 
„ crispulum 
Barbula cavifolia 
„ aloides 
„ unguiculata 
„ fallax 
„ vinealis 
„ convoluta 
• tortuosa 
„ muralis 
d. rupestris 
„ b. incana 
„ subulata 
„ latifolia 
„ ruralis 
Cinclidotus riparius 
„ b. terrestris 
„ fontinaloides 
Grimmia apocarpa 
„ orbicularis 
„ pulvinata 
Racomitrum lanuginosum 
Zygodon viridissimus 
