j&S.nz 
/J -s 3 
fnttteg«{pm-fW. 
PALEONTOLOGY: 
VOLUME IV, PART I. 
CONTAINING DESCRIPTIONS AND FIGURES OF THE FOSSIL BRACHIOPODA 
OF THE UPPER HELDERBERG, HAMILTON, PORTAGE AND CHEMUNG GROUPS. 
1862 - 1806 . 
BY JAMES HALL, 
ALBANY, N. Y. 
PRINTED BY C. YAN BENTHUYSEN AND SONS. 
MARCH, 1867. 
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