158 EXTRACTS AND NOTICES. 
Les Characées Génevoises. By Dr. J. Miituer (Mull. Arg.) 
at the end of the description. The naming of forms of the common 
species of Chara is carried to excess, thirty-two varieties of 
previously described varieties should be given as new. 
H. & J. G. 
Tux ‘ Transactions of the Hertfordshire Natural History Society’ 
for December last contains a paper Rey. G. Henslow on 
the ‘Homology and Analogy of Plant Organs.’ It is a compre- 
hensive summary of numerous and varied observations; but, as it 
appears to us, is somewhat out of place in the Transactions of a local 
Tux ‘Transactions of the Epping Forest and County of Essex 
Naturalists’ Field Club,’ issued last December, contains papers on 
‘The Preservation of Plants with their natural colours,’ by James 
slish ; and a ‘No n abnormal form of Cardamine pra- 
tensis,, by John Gibbs: the latter monstrosity is one so well known 
that it hardly deserves special prominence. 
_ Dr. Brarruwarre is pushing forward his ‘ British Moss-Flora ’ 
with commendable energy; the fourth part, containing the [isst- 
dentacea, with three plates of characteristic excellence and accom- 
panying text, is now before us, containing also a useful glossary of 
the terms employed in the book. This completes the first section 
of the work; and subscriptions for the second section (to comprise 
the Leucobryacee and Dicranacee) are invited. There must be 
_Fissidens rufulus, a species (from Westmoreland) new to the 
British moss-flora. 
