ADVERTISEMENTS. 
Lchaustion 
Horsford’s Acid Phosphate. 
hg phosphates of the system are 
consumed with every effort, and 
exhaustion usually indicates a lack 
of supply. 
supplies the phosphates, thereby 
relieving exhaustion, and increasing 
the capacity for labor. 
PLEASANT TO THE TASTE. 
. A. N. Krour, Van Wert, O., says: 
“ Decidedly beneficial in nervous exhaustion.” 
Dr. S. Newman, St. Louis, Mo., says: 
“A remedy of great service in many forms of 
ustion.”” 
Descriptive pamphlet free. 
Rumford Chemical Wcrks, Providence, R. I. 
SUBSTITUTES AND 
BEWARE OF 
IMITATIONS. 
ae tnim sure the word ‘‘ Horsford’s’’ is 
On the label. All others are spurious. 
Never sold in bulk, s 
em a E 
The Acid Phosphate 
NORTH AMERICAN 
LICHENS 
In sets, including 15 to 20 of my new species, 
Very fine material. Just collected by 
W. W. CALKINS, 
147 California Ave., Chicago, Ill, 
Now Ready, Price r5s. 
Printed by order of the Trustees of the Australian 
Museum, Sydney. Volume II., Part I., of 
AUSTRALIAN LEPIDOPTERA and 
THEIR TRANSFORMATIONS. By the late 
ALEXANDER WALKER SCOTT. With Il- 
lustrations d from the Life by his Daughters, 
Harriet Morgan and HELENA FORDE. "Edited 
and Revised by ARTHUR SıpNEY OLLIFF and 
HELENA FORDE. 
The work will be published in parts, each containin, 
three foolscap (17 by 1314) plates, colored by hand, an 
only those species of which the transformations were 
known to Mr. Scott will be : 
fresh issue of Parts I., I., and II., forming 
(London, 1864, Van Voorst, 
shortly be available for pur- 
Volume I. of the work 
nine colored plates) will 
RUBNER & C 
BEAUTIFUL GEODES. 
10,000 native bird and 
dreds of beautiful and rare trop 
ica 
th inquiries or for printed lists 
stamp wi d lists. 
lished in 1873. efer by permission to Prof. 
Robt, Ridgway and Prof. J. A. Allen. 
S. K. WORTHEN, 
Warsaw, Ill. 
CHA 
Natiralist and Taxidermist, 
Check-List of Canadian Plants. 
Several additional species discovered last year (1890) are included. 
The price of the list is 50 cents per copy, 3 copies for $1.00. 
Address, 
JAS. M. MACOUN, 
Geological Survey, Ottawa, Canada. 
