Verlag von Theodor Oswald Weigel in Leipzig. 
:::::::: Erscheint in zwanglosen Zwischenräumen. :::::::: 
Auf Wunsch regelmäßige und kostenlose Zusendung. 
NP.14. 
Manila, Dec. 11. 1909. 
Theodor Oswald Weigel, Esq. 
Leipzig. 
Dear Sir, 
I notice that in recent number of „Herbarium“ you have con- 
siderable to say regarding a „Zentralstelle für systematische 
Pflanzensammlungen“, and it has occured to me that it might 
be to the mutual advantage of both this Institution and you, if 
some plan could be arranged by which an exchange could be en¬ 
tered into. Our collections comprise all groups of flowering plants, 
vascular cryptogams, mosses, scale-mosses, lichens, fungi and to 
some extent algae. As to values, of course, some specimens will 
command a much higher price than others, depending on their 
rarity, and perhaps on the demand in certain groups. However, 
to avoid any difficulty in this matter, it will perhaps be best to 
place a fixed price on all material, so much for each first-class 
specimen without regard to its rarity or degree of abundance. As 
to the price per Century I think M 50.— will be fair to both. 
No material has ever been sold by this Bureau, although I have 
had many requests for such. As a matter of course botanical 
specimens from a country like this command a higher price than 
do those from temperate regions, and those especially well known 
botanically. My first shipment to you will be two centuries of 
which the first Century consists of miscellaneous flowering plants, 
mostly, if not entirely Dicotyledons; my second Century will consist 
entirely of Gramineae, or possibly 3 /4 Gramineae and V 4 Cypera- 
ceae, depending on the number of specimens of the Gramineae I 
find available at the time the sets are made up. 
Trusting that this arrangement may be to the mutual advan¬ 
tage of your firm and this Institution, and that there will be suffi- 
cient sale of Philippine botanical material to warrant an extention 
of this proposed sale, 
Very truly yours, 
E. D. Merrill. 
Verlag von Theodor Oswald Weigel in Leipzig. 
14 
