INDEX. 201 
Page. Page. 
Semeostomites zitteli, description of . 70-72 | “Star cobbles” containing fossil meduse, character 
1 | OP SISO) We ee acces denon qo oree Coe Rem eae 71, 182 
Siliceous nodules containing fossil medusze, discov- 
(Bie, 0 ack SOP e ERE En Be aa ee 
character and occurrence of--- 
lithologic character of - 
mode of occurrence of - 
@hemica) character Of. -- 9-5 -----. .2-<q5—--5-—-=== 
microscopic character of -.-.-..--...------------- 12-14 | 
Silicification of medusee, mode of - -...--.------------ 15-21 
Sorby, H. C., cited on sources of silica in oceanic 
Sollas, W. J., cited on solution and redeposition in | 
oceanic waters--- 
Spatangopsis costata (= Medusina costata), deserip- 
HON OLS en os ere len ea ones Sas OS coat, 49-54 
“Star cobbles’ containing fossil medusw, discoy- 
ON Olea eters e an etn ict eacen oe Samant eee eas ix,3 | 
and occurrence) Of. -222= = 2-2-2 -<.==— ous ese 
litholosicicharacten Ofs.—--- 5 een. aes oe 
mode ofiocenrrence:of- *--- = =< -= =~ eee 
chemical character of --- 
microscopic character of 
Stokes, H. M., analyses by 
Sweden, fossil medusze of 
Torell, O. M., cited on Eophyton- - 
| Trachynemites deperditus (— Msine Fanghasticny 
GeReripiionotn= seeesus soe ae ae nn Seance 91-93 
| Trails and markings, figures of casts of - --_--- 176, 178, 180 
Tria Tisites| CHILO Gleason = sone one areca ne cacec oe 66 
Wallich, G. C., cited on sources of silica in oceanic 
TNO EUDONIT eee ean 1s 
IeZittolu carlo aid byeee-ecc-s Seana ¢ 
cited on imprints of meduses in V (egeeeute 
MOCKS ae oo de oe en eae sans eecengu cuss cewcussace 
