je REVUE BRYOLOGIQUE 
tenir à cette série. Les modifications qui établissent ce passage 
semblent porter tour à tour sur chacun des caractères du 
système végétatif et du fruit, sans être enchaînées les unes 
aux autres par des liens fixes. La tendance des dents à se 
creuser d’un sillon sur leur ligne médiane, qui est propre au 
… Bryum archangelicum, n'échappe pas elle-même à cette varia- 
tion. 
# 
PHILIBERT. 
Tropical Mosses in Skins of Tropical Birds- 
The study of the mosses from tropical countries is of high 
interest for many bryologists. But it is difficult to get the 
necessary material, because it is not always possible for the 
lover of those plants to travel to the Tropics and to explore 
the bryological treasures of the primaeval forests. I beg there- 
fore to be permitted to direct he attention of the readers of 
the Revue bryologique to a source by which one is able to 
get tropical mosses in abundance without any difficulty and 
thereby often in species unknown to science. 
_. The mode and the predilection of our ladies for hats with 
feathers are the cause that now all parts of the world are 
. Of the birdhunter from the bark of the Woodtrees or picked 
up from the soil. But that is no defect for bryological objects, 
_ as the mosses possess the very useful peculiarity, if soaked in 
tepid water, to assume their natural form and for the most 
_ part also their natural colour. It is then always possible to get 
_ these mosses in a state not repulsive to the bryological eye. 
By this proceeding, if applying to the traders in ornamental 
feathers, one may get most interesting mosses. 
ar productive in this regard, at least as to the quan- 
tity, are the skins of the Monal pheasant (Lophophorus 
impeyanus) from the Himalayas. Those skins are nearly all 
filled out with moss. In most cases the largest part of the 
contents consists in Leptodon flexuosus Harvey, often with 
fruit, the rest in Leucodon strictus Miiten, also c. fr. Only 
one skin of many I got contained Thuidium cymbifolium Dz. 
et Mbr. and Trachypus crispatulus Mitten. In these species 
_ occur different species of other mosses and hepatics in smal- 
e 
