224< 
THE GEOLOGIST. 
denote correspondence in position in two or more series of strata," * 
and Professor Huxley uses the term liomotaxis as expressing sucli 
relation. 
Trees, 
Denmark. 
Weapons, 
SlvuUs. 
(Denmark.) 
Instances. 
Beecli. 
Workers in Iron, 
Dolichocephalic. 
Oak. 
Workers in Bronze. 
Dolichocephalic. 
Switzerland. 
Pine, 
Hatcliets not chipped, 
but ground in Stone. 
Brachycephalic. 
Switzerland. 
Kjokkenraoddiugs. 
Natchez. 
Hatchets not ground, 
but chipped in Stone. 
Smmnp VjiIIpv 
Pliocene. 
Miocene. 
Eocene, 
It has been further sought to show, that, as in Denmark and some 
other localities, a regular scale of division of the humatile strata into 
beech, oak, and pine-producing deposits prevails, each respectively 
coincident with iron, bronze, and stone remains, that an analogous 
distribution in time prevailed during the deposition of the extra- 
European humatile strata. Neither observation nor analogy, however, 
demonstrates this assumption. In the whole American continent, 
although we have the chipped flints and celts from Natchez and 
Chiriqui.f the obsidian knives from Mexico, and the arrowheads from 
Tierra del Fuego, the copper and gold implements from Peru and 
Chiriqui, the American mind never devised the plan of smelting 
iron from the ore, and applying the metalliferous residue to a useful 
purpose. The so-called " Iron Age" never existed in America. 
The division of human crania into "brachycephalic" and "doli- 
chocephalic " originated with the late Professor Eetzius. Like the 
arbitrary and conventional divisions of other anthropologists into 
" orthognathous " and "prognathous," it was convenient as aff'ord- 
ing easy and intelligible descriptive terms for crania of diverse races. 
As a test of distinction of race, however, it is an insufficient mark of 
distinction. The supporters of the theory have based on it the fol- 
lowing classification. J 
* Huxley, Address to Geological Society, 21st February, 1862. 
t W, Bollaert and C, C, Blake on Antiquities from Chiriqui : Ethnological Society, 
March 18, 1862. 
% On Fossil Man, Royal Institution, February 7, 1862, 
