267 
nomina nuda. The remainder of the plants included between 
these numbers will form a second paper, to be issued in the 
autumn of the present year on Dr. Rusby’s return from Europe, 
where he is now engaged in making comparisons with named 
material at Kew and Berlin, and subsequent papers will complete 
the account of the collections, the accumulation of which, it is 
hoped, will continue over several years longer. Mr. Bang’s num- 
bers have now reached about 2000, and taken together with Dr. 
Rusby’s collection represent over 3500 species. These, with the 
collections of Mandon and Weddell, the best sets of which are in 
the Paris Herbarium, and those of Pearce and Pentland at Kew, 
probably indicate about 5000 species from Bolivia. Dr. Otto 
Kuntze has recently made some collections in the territory, and 
we understand is now engaged in their determination. It isa 
cherished plan of Dr. Rusby and the writer to ultimately bring 
an account of all this material together in the form of a Flora of 
Bolivia; but time alone will show whether this enterprise can be 
brought to a successful termination. N.L. B. 
Lrythronium—The Range of Variation in Species of. M. E. Meads 
(Bot. Gaz. xviii. 134-138; one plate). 
Flora of Montreal Island—Changes in the. Robert Campbell 
(Can. Record Sci. v. 294). 
forests of the South—The. Henry L. Tolman (Gard. and For. 
vi. 158), 
Fossil Diatoms in Philadelphia beneath the New Girls’ Normal School 
Building —Marine clays overlying fresh-water clays at some other 
localities. Lewis Woolman (Microscopical Bulletin, ix. 33-34). 
The author calls attention to the fact that in most of the clays 
that lie immediately beneath the surface of the old city proper, 
and which have an elevation of less than 40 feet above mean high 
tide, there is a considerable showing of sponge spicules and dia- 
toms. The diatoms are both fresh-water and marine, the latter 
predominating. There is given a list of 31 species from the de- — 
posit at Thirteenth and Spring Garden streets, found thirteen feet 
beneath the surface. C. H. K. 
frost Freaks of the Dittany. Lester F. Ward (Bot. Gaz. xviii. 
183-186; one plate). 
Note on Cunila Mariana as a “ frost-weed.”’ 
