180 Works of Barrande. 
crystals occurring at Norwich, ig were completely sur- 
rounded by the allied species, fibrolit 
Dolomitic limestone constitutes the aha repository of corun- 
dum in other countries, as at Campo Longo, St. Gothard; and 
of the emery, according to Dr. J. Lawrence Smith, in the Turk- 
ish dominions, where he has pointed out the margarite, diaspore 
and chloritoid as its distinguishing attendants 
The examples from Mozzo, Piedmont, show a gangue of some 
ompact iPaten of feldspar ; but, it is noticeable, with the be 
sum. i to av poeta in dolomitic limestone; while he 
larger crystals and cleavable masses from Ava, Hindostan, 
Thibet and China, as well as those from ve Urals, were prob- 
ably afforded by a region in some respects similar to that of the 
mountainous district of Georgia and North Carolina; but of 
the minerals immediately aeoate with it in those countries 
we possess no reliable informatio 
Amherst College, June 8, 1872. 
Art. XXV.—Notice of some of the works of J. Barrande, with 
extracts from he} remarks with reference to the mode of origin of 
Paleozoic species. 
Trilobites, Extrait du aippleaieys au vol. i. du Systéme 
Silurien du centre de la Bohéme. Prague, 1871. 8vo, 282 pp. 
2. Systéme Silurien du Sei de la Bohéme: Pies ii, Céphalo- 
podes; 4™° Series, Pl. 351 4 460. 4to. ag So 
3. Syst. Sil. ete. ; Céphal odes ; a Spe 1 istribution 
horizontale et verticale “~ 6 éphalopodes, dans les Contrées 
Siluriennes. 4to. Prague, 1 
THE receipt of the above-named volumes, which we owe i 
the kind ee of the author, Mr. Joachim Barrande, ° 
Prague, Bohemia, gives us a favorable opportunity for noticing 
the , ektouiid "iad valuable labors of this accomplished natw- 
For forty years or more, he has made the study of the ea 
strata of Bohemia and of their fossils his principal objec His 
first publication was a brief “‘ Preliminary Notice of the Silurian 
Bede and the Trilobites of Bohemia,” issued in Leipzig 
This was followed, in 1847 ‘id 1848, by a brief notice 
the Bohemian Brachiopoda, published in two parts, a 
* Prepared for this place by Professor Frank H. Bradley of Knoxville, Tennesse® 
