Zl 
labels, placed in a tray about the size of an herbarium sheet. 
Botanists generally should be interested in this collection, prepared 
especially for use at the Agricultural Experiment Stations, where 
it will prove invaluable in the determination of seeds. A few 
sets of the collection may be had from Professor Halsted at $10 
each. 
Ln my note on Polypodium vulgare var. Cambricum, in the Sep- 
tember BuLvetin, I stated that it was its first recorded station in 
America. In this I was in error, as Dr. T. J. W. Burgess had al- 
ready noted in 1886 (Trans. Royal Soc. Canada, iv., 10), the find- 
ing of this variety at Port Simpson, British Columbia, near the 
southern extremity of Alaska. I had entirely overlooked this 
reference, although Dr. Burgess had kindly sent me a copy of his 
paper when published. Lucien M. UNpDERWoop. 
GREENCASTLE, IND., October 31, 1892. 
Sur la Conservation des Herbiers —A\fred Chabert (Bull. Soc. Bot. 
France, xiv., 156). Various more or less laborious methods for 
the preservation of plants in herbaria are discussed at length. 
Among others it is noted that paper manufactured solely of vege- 
table matter and unbleached, notably that made of wood fibre is 
especially valuable for preventing the ravages of insects, though it 
is neither as white nor as smooth as might be wished for. It is 
suggested that it might be desirable to use alum in the manufac- 
ture of herbarium paper as a preventative of insect life. The au- 
thor concludes, however, that one of the most efficacious, least ex- 
pensive and least time-consuming of processes for the complete 
extermination of herbarium pests is a semi-yearly fumigation with — 
sulphur. - Aa MEV. 
Pink Water Lilies-—An interesting fact concerning Castalia | 
odorata, {. rosea (Pursh.) Britt., ,has just been brought to my notice. 
Ona plat of low bottom land near Buffalo, Putnam Co., Ww. Va." 
the plough turns up a large number of small tubers each season 
that the soil is cultivated. These planted in tubs produce, much | 
to the astonishment of the neighborhood, beautiful deep-pink — 
water-lilies. _ How long this bottom has been drained is not 
known, but the evidence adduced by the fact above stated of the | 2 
existence of a pene here, inca over a century Bes is Nath in-" = ts 
