453 
which. Brongniart inevitably invited is pointed. out, viz: that the 
genus /ucoides as defined by him, was so broad that it was made 
the dumping ground for all sorts of fossils, inorganic markings 
and casts. About 100 different species and varieties have been 
included under it. Subsequent work by Brongniart and by Stern- 
berg is referred to, in which the attempt was made to divide 
fucodes into genera and sub-genera in accordance with supposed 
affinities with living genera. These and other described forms 
are criticised as to their algal affinities, and in many instances as 
to their organic or inorganic origin by the author, who finally 
ends with a list of the species which have been described under 
the genus Fucoides, with authority and date of publication, to- 
gether with the names under which they are now recognized. 
The author has followed the rule of priority in nomenclature, so 
that many changes in name may be noted. Thus Fucoides Alle- 
gShaniensis, Harlan (1831), becomes Arthrophycus Alleghaniensis 
(Harlan) and not A. Harlani, Hall (1852). The only species 
which the author would retain under the old genus Fucoides is F- 
strictus, in accordance with laws of nomenclature, one of which 
‘requires that the sine Ss of a genus proposed be taken as 
the type of that genus.” | AH. 
Ruthenium Red in Plant Histology, A. B. Aubert (Am. Mo. 
Micr. Journ. xiv. 232). 
Translation and condensation of a communication to the 
Academie des Sciences, Paris, December 26, 1892, by Mr. A. 
Joly. . 
Salix—A Study of the Venation of. N.M. Glatfelter (Ann. Rep. 
Miss, Bot. Gard. v.; reprint; illustrated). 
Sketch of the Botany of Ireland. A.G. Moore (Journ. Bot. XXXi. 
299-304). | 
Notes ona considerable number of Irish plants. Chapter 1 
deals with the American species represented: Spiranthes Roman- 
soffiana, now known from several stations, Sisyrinchium angusti- 
folium at several Galway and Kerry localities, but not certainly 
indigenous, Juncus tenuis and the recently observed Polygonum 
sagittatum (misspelled sagittifolium), pretty clearly introduced. 
