184 THE ORCHID REVIEW. _ (Jurv-Avcust, 1918. 
area occupied at any given time in any given country depends mainly upon — 
the age of a species in that country (not its absolute age),” and he proposes 
to “‘ substitute age for natural selection as the chief agent in determining 
the area occupied by any given species, so long as no important barrier 
interferes.” A serious limitation is, however, introduced, for he says that 
it must be clearly understood that, as in Mendelism, one must always deal 
with twenty or so species at once. Incidentally, we are confronted with 
another problem, for speaking of the pollinia of Asclepiads, he asks, “If 
these arose, as one must believe, directly at one operation, where does 
Natural Selection come in as formative or explanatory? But we do not 
see why one should believe such an obvious adsurdity. : 
> 0< 
Tue Orcuip ReEviEw.—Our readers will remember the notice that 
appeared at pp. 246-249 of our last volume. It elicited some interesting 
letters and valued support which we hope will secure the future of the Review, 
and if we have not previously replied publicly it is because the matter 1s not 
yet completed. - Since that note was written a further advance of 20 per 
cent. has taken place in the cost of paper and printing, and now we are faced 
with a further increase of 50 per cent in the cost of postage. In addition to 
this, the pressure of additional work and shortage of labour caused by the 
war, has rendered it impossible to get the work out to time. One valued 
supporter strongly advocates bringing the work out bi-monthly, as 4 
temporary measure, and although we have tried to avoid this, we agree that 
there are compensating advantages, and we hope that our readers will fallin 
with this arrangement, which, it will be noticed, commences with the present 
issue. The increased cost of postage for journals of this kind seems to us 
distinctly unfair, because it does not apply to newspapers, even when far 
heavier and publishing the same kind of matter. The rate of postage, 
formerly double, is now trebled, which becomes practically prohibitive. 
S, : 
ANSWERS TO CORRESPONDENTS. 
[Orchids are named and questions answered here as far as possible. Correspondents 
requested to give the native country or parentage of plants sent. An ADDRESSED postcar f special 
sent sf a reply by post is desired (abroad, reply postcards should be used). Subjects 0 
interest will be dealt with in the body of the work]. 
C.W.P.—Oncidium carthaginense, Swartz. The others not yet to hand. 
S.T.—Anguloa brevilabris, Rolfe. : dendrully 
C.H.L.—n.35, Epidendrum Pfavii, Rolfe, Kew Bull, 1894, p. 392; 2-36 Epiden’t 
species not yet matched ; n.37, Oncidium, possibly new, as suggested. Can you sen 
complete materials of these? Many thanks for the notes. able t0 
F.D.—A Pleurothallis near P. ornata, Rchb. f., which we have not yet been 
match. 
