naturalists’ quarterly advertiser. 
xxxvii 
_A.ZLO-.iE1- 
We have in stock which we can offer at the very low price 
of $2.50 
Sets of Marine Algae, 
correctly named and finely mounted on white paper. 
In these sets, containing twenty-five species, the three sub¬ 
classes of the Algse of United States, viz : Floridece , Melan- 
osporce and Chlorosporce are represented, as well as many 
of the orders and sub-orders, in fact, each set, so far as 
its limits allow, represent the characteristic algae of U. S. 
The sets are put up in this way so as to bring the price 
low enough to be within the reach of all; many who are in¬ 
terested in these beautiful plants not feeling able to afford 
the more expensive sets, which have from time to time been 
offered for sale. 
With those desiring sets of U. S. Algae we shall be glad 
to correspond, as we have fine facilities for procuring com¬ 
plete sets scientifically named and classified. 
FOSSIL FERNS. 
We have a collection of these interesting objects, a list of 
which is given below. These specimens are very fine, hav¬ 
ing been chosen specially for our trade by an experienced 
geological collector. 
Podozamites lahceolatus (America), 
Calamites cannalformis, . 
Stigmaria ticoides,. 
Clathropteris rectiusculus, .... 
Neuropteris cyclopteroides (Carb ), 
“ gigantea, . 
“ liirsuta, . 
Nannularia longifolia,. 
“ sphenophylloides, .... 
Pecopteris villosa, . 
Legumenosites marconanus, .... 
Sigillaria oculata, ....... 
Cyclopteris linnseifolia,. 
Pecopteris (Lepidopteris) Stuttgartensis. 
75 cts. to $2.00 per specimen. 
. 15 
44 u 
1.60 
4 4 
. 15 
u ii 
2.00 
4 4 
4 4 
. 25 
.75 
44 
. 10 
.25 
4 4 
. 15 
u u 
.75 
4 4 
4 4 
5 
44 44 
1.00 
4 4 
. 10 
4 4 4 4 
1.00 
44 
“ 
. 10 
4 4 4 4 
.50 
4 4 
4 4 
. 10 
4 4 4 4 
.75 
i 4 
4 4 
. 10 
4 4 i 4 
.80 
4 4 
4 4 
4 4 4 4 
2.00 
4 4 
. 10 
4 4 4 4 
.75 
44 
4 4 
1.00 
4 4 4 4 
1.50 
4 4 
