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TABLE OF CONTENTS. 



Cll.VI'TIiK VII. 



ARTICLE III. (248.) 



Histology of Ilaliclystus Auricula 



§ 25. Tlie Unibellar and reduncular Wall.-i 



§ 26. Histology of tlie Tentacles . 



§ 27. Histology of the Colletocystophores (Anchors) 



§ 28. Histology of the Caudal Disk 



§ 29. Histology of the Digitali 



§ 30. Tlie Prehensile Cysts 

 Description of the Plates .■••-. 

 Glossary and Index of Subjects . . . • • 



On the Geologv ok Lower Louisiana and the Salt Deposit 

 OF Petite Anse Island. By Eugene W. Hilgaed, Ph.D. Pub 

 lished June, 1872. 4to. pp. 38. Two plates 



From Vicksburg to Port Hudson 



Port Hudson 



The Lower Mississippi 



The Five Islands 



Cote Blanche 



Weeks' Island 



Petite Anse 



Belle Island and Orange Island 



The Attakajias Prairies 



The Port Hudson Group 



The Drift Period, South and West 



The " Terrace" Epoch 



Origin of the Five Islands and Age of the Salt Deposit 



ARTICLE IV. (310.) On the Internal Structure of the Earth considered as 

 Affecting the Phenomena of Precession and Nutation, being 

 THE Third of the Problems of Rotary Motion. By J. G. Bar- 



PA HE 



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