THE NATURALISTS’ COMPANION. 
155 
QUERIES AND ANSWERS. 
1 \) R. I). Goss, New Sharon, Iowa. 
'I'he birds described by you in the last 
issue of the Companion were Black¬ 
headed Grosbeaks (goniaphea melan- 
ocephala). David Bruce, 
Brockport, N, Y. 
. Mr. Bruce kindly presented us with 
the skin of one of these birds, and we 
find that the desci iption fitsexactly—[E d 
— o— 
We have a number of other questions 
which we will endeavor to answer in our 
May number. 
EXCHANGES. 
THIS colamn is open to all subscribers, who m ; y insert 
exchanges free of charge. AO advertisements admitted to this 
onlarmra Hinder .any circumstances, and we shall reserve the 
right to insert no exchanges which are merely intended to se* 
cure cash.purchasers.—Ed. 
Chas. D. Pendell, Waverly, N. Y.— 
Will give a bargain in good minerals 
or books for a Dana’s Mineralogy. 
H. R. vSharples, box 1968, West 
Chester, Pa.—12 different stamps for 
every good labeled mineral or arrowhead. 
Wanted—Correspondence with differ- 
ent Chapters of the Agassiz Association. 
Ben Clawson, Washington, Indiana. 
G. D. Story, Carter ville. Mo.—Min¬ 
erals, woods anti curiosities,to exchange 
for minerals, fossils, coins, fractional 
currency, Indian relics, ocean curiosi¬ 
ties, match, medicine, playing card 
u-nd revenue stamps and curiosities of 
all kinds. 
W. G. TALMAiroE, Plymouth, Conn. 
—A Lecester scroll saw (without lathe), 
with ten dozen saws, a pair ol No. i 
climbing irons, with straps, a 48 inch 
(Horseman) Ideal bicycle, steel s]3okes 
and rubber tire, Vol. i Young Oologist 
(bound) and 75 rare American eggs, all 
different in a 6 drawer blackwalnut cab¬ 
inet; lot valued at ^‘50, fora foot-power 
lathe, Barnes No. 4 or Providence pre- 
fered, 6, 7 or 8 inch swing with slide 
rest, drill chucks, etc., in first class order. 
Historical Geology. 
A SERIAL. 
BY FRANKLIN C. JOHNSON. 
CHAPTER VII. 
CENOZIC TIME. 
This time comprises but one age, that 
of mammals. 
Enormous animals roam over the 
land, wild horses prance over the plains, 
foxes chase their prey, birds sing in the 
trees, and fishes splash merrily in the 
water. 
'Phis age is divided into two periods, 
as follows : 
AGE OF 2. Post-d’ertiary Period. 
MAMMALS 3. Tertiary Period. 
TEFfTlARY PERIOD. 
The marine Tertiary beds are on the 
borders of the Atlantic, Pacific, and on 
the Gulf of Mexico. Fresh water Ter¬ 
tiary beds are found among the Rocky 
Mountains and in the Upjjer Missouri 
region. 
The rocks are mostly marl, [lebbles, 
clay, sand, etc. 
Beds of light bituminous coal are 
found in many places. 
The land had an abundance of vege¬ 
tation. The oak, poplar, maple, hick¬ 
ory, mulberry, and many other trees 
have been found. Nuts are common 
in some localities, as at Brandon, Vt 
