T^L^TE II. 



Kig. 1. PrvcHOPirYi.i.uiM inkunuiuulum ~'i 



1. A luiigiliuiiiiiil section, fhowing the dv\>ih of tbc u:ili(^f, with the uufuudibiiliform 



plati's, and appareuccs of a columoUa. 

 1 a. An upper view of auothtispecinieu. 

 1 /). A sidi' vii'W of a lliirtl specimen. 



l"ig. 2. CvATJioniYi.i.r.M Talmehi 33 



\iv\\ of nppd- side, sliowiiig llie jcamg corallitcs ut places glowing in Ibe luiddleof tbo 



Fig. 3. Favositks I'oLYMOiirnA ? ? y7 



Fig. 4. DlPIIYPIIYLLUM KASCIC.ILUM 29 



4. A side view of a buudle of tbe corallitcs, imperfect at botb ends, and sbowiug them . 



to coalesce at intervals. 

 4 a. A longitudinal section of one of same, enlarged, showing tbe wide inner area occupied 



by broad, slightly arching tabnlie (without any traces of a columella), and the 



very narrow, outer vesicular area. 

 4 6. A transverse section of same, enlarged. 



Fig. 5. AcEUVULAIilA PENTAGONA 31 



5. View of upper side, sbowiug corallitcs, natural size. 



G <T. A transverse section of a few of the corallitcs, enlarged. 



Fig. 6. S.MiTHiA Hennaiiii 32 



6. View of surface, showing corallitcs, natural size. 

 C a. Transverse section of same, enlarged. 



Fig. 7. .\lveolites mui,tii^amei,i,a 25 



7. View of a flat, vertical, weathered section. 



7 a. A portion of same, polished and magnified, so as to show the nnim rous, thin, crowded 

 tabulas, and tbo mural pores; the latter being seen through the transparent 

 calcareous matter filling tbe interior. 



7 6. A transverse section of the same, showing tbo forms of the corallites, magnified. 



Fig. 8. OliTIIOCEKAS KiNGlI 47 



Fig. 9. OiniU)CEi!A.s(undt. sp.) 48 



