532 Life of Joachim Barrande. 
rest a question once so keenly controverted, namely, whether there 
existed in Paleozoic as in Neozoic times distinct natural history 
provinces of Mollusca and of other classes of invertebrata. He 
has shown, not only in regard to the fauna called by him Primor- 
dial, but also in respect to his second and third faunas, corresponding 
with what we have usually termed Lower and Upper Silurian, that 
distinct assemblages of species inhabited simultaneously different 
marine areas. The Paleozoic species, for example, of Bohemia 
differed from those of Scandinavia, and the North-American species 
from both. After examining, with M. Barrande as my guide, the 
beautiful Sections of Silurian rocks laid open on the banks of the 
Moldau, I felt convinced that he had correctly interpreted the order 
and succession of the rocks, and in whatever manner we may 
endeavour to account for the intercalation in the midst of the Lower 
Silurian strata of certain distinct groups of species (called by 
M. Barrande ‘Colonies’), we must at least accept the facts as true, 
and believe the exact position of the fossiliferous formations to be as 
they are described by this accurate observer.” (Anniversary Address 
President Geol. Soc. 1857.) Barrande’s first work, ‘‘ Notice pré- 
liminaire sur le Systéme Silurien et les Trilobites de Bohéme,” 
appeared in 1846, and also ‘“ Noveau Trilobites, supplement 4 la 
Notice préliminaire, &e.” In 1847 two other works followed (the 
larger in the ‘‘ Verhandlungen der Gesellschaft der Naturwissensch. 
in Wien’) and one on the Brachiopoda of the Silurian formation 
in Bohemia. The State-Geologist, Ritter von Haidinger, referred to 
Barrande’s work at the first Session of the Royal Academy of 
Sciences in Vienna in 1848, and stated that it had cost its author 
25,000 gulden from his own private means to publish those works. 
In October of that year (1848) the Society granted him 1500 gulden 
in aid of his first publication. 
The first volume of his great work appeared in 1852, in which 
is an admirable geological introduction, giving a summary of the 
entire Silurian System of Bohemia arranged in eight divisions re- 
presented by the letters A to H, the minor subdivisions being repre- 
sented by al, a2, or 61, 62, ete. 
In the same manner he gives a concise summary of all the dis- 
tinctive characters of the head-shield and pygidium of every genus 
of Bohemian Trilobites, with figures in most elaborate detail of each 
species, all the plates being exquisitely executed and rendered with 
microscopic accuracy, and surpassing in beauty any previous paleeon- 
tological work of the kind ever before attempted. 
The work as left at Barrande’s death consists of 22 huge quarto 
volumes partly of text and partly of plates; these were issued from 
1852 to 1881, and contain 6,000 pages of letterpress and 1160 plates 
of fossils. 
Although many copies of his work were sold to foreign scientific 
institutions and libraries, the receipts barely covered the cost of pro- 
duction, yet Barrande employed no publisher and carried out with 
enormous labour every detail of this great work under his personal 
care. ‘T'o accomplish it, he shunned neither personal privation nor 
