CONTENTS. 
vi 
LETTER IX. 
Madrepora Stellata, &C....M. Truncata...M. Stellaris...Madreporites from Steeple Ashton... 
Madrepora Organum, &C....M. FIexuosa...M. Fascicularis...M. Pectinata...M. Arachnoides 
...M. Vermicularis...Coralloidea Columnaria Pantaedra of Woodward. ..Madreporite from 
Ingleburgh...Junci Lapidei... Kilkenny Marble 47 
LETTER X. 
Mycetitae of Wood ward... Porpital and turbinated compound Madreporites... Ramose Madrepo- 
rites...Milleporites...Celleporite8, &c... .Fossil Corals of unknown genera* gg 
LETTER XI. 
Fossil Alcyonia... Considered as Fruits, by Volckmann and Scheuchzer... Fossil Alcyonia of 
France... Difficulties in distinguishing the Fossil Sponges from Fossil Alcyonia.. .Various 
Specimens described 79 
LETTER XII. 
Fossil Alcyonium described, by Abbe Fortis... Species of various inedited Fossil Zoophytes 
described jQg 
LETTER XIII. 
Alcyonites agreeing in their Forms; but differing in their Structure...Specimens of, from France, 
Italy, Switzerland, and England... Wiltshire Alcyonite 117 
LETTER XIV. 
Alcyonites enclosed in Flint...Found in Wiltshire, Oxfordshire, Buckinghamshire, and Hertford- 
shire.. .Other Specimens noticed j28 
LETTER XV. 
Maestricht Fossils... Ambiguous Appearances.. .Compared with other Fossils, from Switzerland, 
England, and America 
LETTER XVI. 
Encrinites and Pentacrinite3...Trochites... History of.. .Various Species described... Original Ani mal 
Membrane demonstrated.. .Screwstone 152 
LETTER XVII. 
Lily Encrinite...Trunk...Pelvis... Superior extremity...Number of Bones in the superior Part of 
the Animal. ..Inferior extremity ...... 
LETTER XVHI. 
Reflections on the Nature and Structure of this Animal.. .The Animal described in various 
186 
LETTER XIX. 
Cap Encrinite of Derbyshire, and perhaps of Yorkshire... Superior Termination...Supposed in- 
ferior Termination.. .Turban Encrinite of Shropshire...” 
Peculiarity of its Trunk. ..Same Column from Gothland 
191 
