98 BOTANICAL GAZEITE. [ April, 
of the publication from which it is taken, together with the number of the vol- 
ume and the date. These items are not infrequently overlooked, and the excerpt 
is accordingly shorn of an important part of its usefulness. But it often happens 
that the author in his distribution does not send a copy to some one w 
terested in the subject, and who for various reasons would be glad to possess 
n this country almost the only course open to him is to apply directly to 
the author for it. In Germany he would usually have no difficulty in pur- 
chasing a copy for a small sum of some one of the numerous second-hand book- 
tores. We on this side of the Atlantic may now and then buy “extras” from 
the dealers in Berlin and Leipzig of the writings of Dr. Gray, Dr. Farlow, and 
other American authors, but we must pay for the journey hey have taken. An 
American dealer Saceiang the confidence of both the authors and the purchasing 
public, who would take pains to gather up such papers as we have been speak- 
ing of, and offer them at reasonable rates by means of classified lists, would 
merit the gratitude of scientists, and we do not doubt would meet with pecu- 
niary success. Then the modest author would feel certain that a demand indi- 
cated a real interest in his writings, and the modest purchaser, who lacked the 
temerity to solicit the article from the writer of it, could still supply his needs. 
OPEN LETTERS. 
Nasturtium lacustre Gray. 
upper leaves oh Nasturtium lacustre detach themselves when fully ma- 
ade emit roots and a stem from the lower extremity. I have seen quan- 
tities “af such oath seuiolline floating in deep rivers. T do not find this fact 
L. H. Barttey, Jr. 
T evtaadburad College, Mich. — 
uble Orange. 
My attention has been horny “salted to an interesting variety of orange 
which ha as been for sale in this oy at said to have come from California. 
The fruit is i the size of a medium orange, ern a slight swelling at the 
tion wise a small orange almost completely enclosed in 
the skin of the etn ore runs from ~~ stem to about the center of 
the fruit, and is of about normal size. Then a and for of the 
remaining distance is more n twice its previous point Is situ- 
ated the small orange. This is ccs pniied of from seven to eight segments ar- 
ranged as in the mai e. ds are found in the fruit, and it is et 
and juicy is duplication of fruits igal bt t in one o on 
but in a whole box, and perhaps exists in e. At the upper or flower end of 
the fruit the rt = not wholly inclose the ear but ta os the Beate ents of 
smaller ora Jos 
Cineinnati, Ohio. 
Arrengecteat of of Herbarium. 
I take out and put back the sheets of my grasses many times in the course 
of a month. Bev hs collection of Pa ot is arranged alphabetically ; tte of 
to . a t 
ipicien mois aaa s alphabetically. I shall be glad to hear the 
views of others, on ‘this subject, — of those who have tried both ways. 
Agricultural College, Mich. W. J. BEAt. 
