G. F. Kunz—Tourmaline and associated Minerals. 303 
and gymnospermous vegetation that characterizes that earlier 
e. hat i i 
forms cannot now be told, but it is to be hoped that the 
Mesozoic strata, not only in Virginia, but in all parts of 
the world may be diligently searched and the materials care- 
fully studied, with a view to discovering these ‘certainly 
merely “missing links” of a chain that can but have been 
once complete. 
It is remarkable that both in its flora and its fauna the life of 
this continent has been thus abruptly truncated. e sudden 
ruption of a perfectly developed mammalian fauna at the. 
appearance unannounced of many hundreds of species of highly 
organized dicotyledonous plants in the middle Cretaceous. 
he advocates of special creation, and likewise the hunters after 
a lost Atlantis, were they informed upon the facts which science 
Itself go plainly teaches, could ask no stronger argument for 
either of their positions. But such persons are usually not so 
Informed, and it seems almost impossible for them to become 
i 
Ess 
Arr. XXXIV.—On the Tourmaline and Associated Minerals of 
Auburn, Maine ; by Grorce F. Kunz. 
[Read before the American Association for the Advancement of Science, at 
Minneapolis, August, 1883.] 
Ty 1868, the Rev. Luther Hills called attention to a specimen 
r. Hatch on the farm of the latter. 
# Superficial one. (See The Tourmaline, by Dr. ; 
Pp. 72, 73). After this considerable searching was made an 
