THE GEOLOGIST. 
JANUARY 1863. 
THE AERONAUTS OF THE SOLENHOFEN AGE. 
At least seven geological ages ago, and there Avere aeronauts in those 
days. Not Glaishers and Coxwells, clinging to bubbles of gas at six 
miles high, but reptiles and birds,— the latter at least, and perhaps 
the former, capable of long and lofty flights. On the red sands of 
Fig. 1. — Front view of cast of brain of Carrion Crow. 
cc, cerebral hemispheres ; m, median line ; oo, olfnclory lobes ; 0/3, optic lobe ; 
sSy section of skull ; aa, air-cavities. 
Connecticut, perhaps some two or three ages before, wingless birds 
had left thoir footprints ; but nor bone nor feather has the searching 
eye of man yet looked upon to glean a notion of what those birds 
were like. Not from all the thick mass of stratified rocks deposited 
by lake or ocean in the long interval between the period of those im- 
VOL. YI. B 
