PREHISTORIC BOTANISTS. 149 
beyond the limits of prudence, and thus defeating capture, or even 
perfect identification. 
Who shall question that through the ages, as now, this mount- 
ain sprite has been true to the companion plants upon which its 
broods are found, even as it is still true in its mimetic wings to! 
the everlasting rocks among which it hibernates? 
Thus, whether in the tropics or beneath the glacial drift, the 
testimonies of the rocks abide, disclosing the prehistoric leaf side 
by side with the feathery intaglio, telling not of the “idle rover” 
and “Epicurean of June,” but of divine emissaries, sponsors to 
their companion blossoms through the prescribed period of their 
being, and myriads of whose species now extinct were linked 
through the ages, even unto the present, in the faithful bond of 
the butterflies’ flight. . 
