402 THE JOURNAL OF BOTANY 
has been formed, or one that will satisfy every batologist, it 
would be rash to affirm; for the cross-alliances and resemblances 
in the species and subordinate forms are so numerous, that, with 
a method of subdivision confessedly somewhat artificial, it is almost 
unavoidably a case of quot homines, tot sententie ; and we have in 
r. Rogers’s arrangement here and there an odd result; of which 
the wide separation of No. 23, R. pulcherrimus Neum., No. 52, 
case in point. The adoption of the intermediate rank of sub- 
species, though at sight perplexing, really simplifies ; in this way 
some less clearly marked species take a lower grade under their 
nearest congener, and some varieties possessing more marked and 
constant characters are raised to a similar level. 
The lucidity of the subject-matter is occasionally marred by the 
want of a like clearness in the arrangement of the type. The sub- 
divisions lettered a, b, c (pp. 48-45, e. g.) are throughout the book 
separated by a space only from what precedes, but are not spaced off 
from what follows ; and when (as on p. 56) uo less than three sub- 
divisions or grouplets follow one another immediately in as many 
lines, without any spacing and without variation in the type, the 
reader has not all the aid a more varied typography would afford to 
help him through the maze of analysis. 
r. Onp. wi 
are told of a panicle ‘ with long, very strongly ascending pekbetias 
and several 5-natel’’; and we seem to have met with a new epithet 
in the last word, till it resolves itself into «5-nate 1.,”’ an abbrevi- 
ation which a list of such translates into ‘leaves.’ ° 
This list of Abbreviations and Explanations (p. xiv) might with 
advantage have een made more complete; for, however obvious 
h 0 
abbreviations are inserted, and the letters E., S., and W. set to 
represent England, Scotland, and Wales respectively, notwith- 
standing the fact that they usually stand for three of the cardinal 
points, and are so employed throughout this work. So (on p. 104) 
E. and W. signify both England and Wales and east and west, and 
S. stands for south, though the reader is directed to understand 
Scotland. With the Appendix, too (p. 99), we get at the sense of 
