92 
Notices of Books and Memotvrs. 
The Characee of Ames By T. F. Auten, A.M., M.D. Parts 1, 2. 
E. Cassino, Boston, U.S. 
Characee anciins Wambo: Disrie a T. F. Atcen, M.D. 
= ee s. 1- 10. 
Dr. ina considers that Chara seunl eal be inclu ded in 
Bra aggregate species C. gymnopus, its only definite distinction 
ian that the globules and nucules are developed separately at 
erent nodes of the same branchlet. In support of the view t at 
number vious spec With regard to the plates, it is 
much to ce ‘genta that bs agate of "he work has been so 
much impaired by their being coarsely and inaccurately executed, 
an y are not improved by the colours in which they are 
ted. 
Under the second title, we have received the first part of what 
promises to be a most interesting addition = Aer published speci- 
mens of Characea. It contains nos. 1-10 which are two 
new species—Nitella intermedia, Nordstedt, whic is allied to N. 
gracilis; and N. megacarpa, Alle en, a very striking plant of the 
polyglochin group. The specimens pi tae well prepared, and 
the Nitelle especially reflect Great credit on Dr. Allen for the care 
he has bestowed upon them. H. & J. G. 
Mr. R. 
= on eras ‘Australian Orchids’ — progress ith satisfactory 
arity, the seventh part of the one and the sixth of the other 
hind been lately issued. Baron von Mueller's careful plates and 
exhaustive descriptions, comprising ch tter of econom 
importance, leave nothing to be desired, and Mr erald 
