X1V 
Fic. 
bo 
11-14, 
15 & 16. 
17 & 18: 
Y9 & 20. 
Lo 
Lo 
PROCESS-BLOCKS AND OTHER ILLUSTRATIVE FIGURES. 
; PAGE 
Head-shield of Z..dalecarlicus, Ane.) ..5.,.1.0.0c.4-- sesame eee 80 
Pyesidium of 2, levis, Michw. 2s)... +. +s: acere eee ee eee 80 
LL. (Ceratolichas) gryps, Wall ic: iy esccesse.42 eee eee eee 81 
Restoration of Polyphyma Lapworthi, gen. et sp. NOV........00.-- 84 
Diagrammatic sketch of the small quarry at the north-western 
corner of Midsummer Hill «2.00.2 2222... 00es sence eee 92 
Section of Hollybush Sandstone and Black Shales at the 
northern extremity of Chase End Hill ......................0000: 100 
Hyolithus (Orthotheca) fistula (Holl) ........2s.:eesens: eee 112 
Opercula of the same: .,........:.sccssecese es rocesesoete et eee 113 
Eyolithus MALVePNensts, SP. NOV. ......ee00.ssersiecgenee ss aces eeaeeeeee 114 
BPD oiivswce ors sdee deere Deceit acetoascus nese eee re 116 
=== /MUMEVUS, SPo DOV. “sisenetvocecteee's stet wena deed ee een eeeeR eee 117 
A e(P)SP2 Cs sctteds vested oc aceeudede. auvasesescsn Gee 118 
CSSULACUS, BP: MOV. vrceresineesies och cose tide bueeeecbet ace eee 119 
Head and part. of thorax of Cheirurus Frederici, Salter ......... 120 
Part of head-shield of Platypeltis cf. Croftii, Call. .. ............ 122 
Part of pygidium and thorax of Miobe (2) sp. ........seeseeeeeeees 123 
Niobe Fomfrayi, Salter se.0s.teecccs soccsse osu ds thats eee eee 125 
Tomaculum problematicum, gen. et Sp. NOV. :.......0c.s.0ceee eveves 126 
Obolella (2)? Groomit, SP. MOV. veo. cs0s.ee vss canenceesns elo eae 137 
Sather, EVO) .n02e co ctxh stent sonal u oye ncan cetera 158 
TAmgulalla (2) SP, o> ste care» casinos espe + cenaseess nee penee pee eee 141 
LO ULG (2) “Sie aise ons phiaee eiclic ba din Iu = selon eure ae eeney Saker 142 
Acrotreta cf, Nicholsont, Dav. .0.iccecsccse.chsestecsssth: eee 142 
—_—. (?) Sabrine, var. malvernensis, NOV. ....0.06+ss00008s40a0t sate 143 
Acrotreta ef. socials, von Seebach: .....::...<.-22..+0seseneheeeeeen 144 
Tannarssonia. Belt, Davis. 25.26. ase osi ences s sac eoaetene eae eae 145 
Kutorgina cingwlata, var. pusilla 0. ..6.00sceere. eens eee eae 147 
Scratched sandstone-boulder, Milos ........:.:42..e00./eenes eee 158 
Apparatus for separating minerals of different specific gravity. 166 
Section near the railway-bridge, Georgenthal, Hisenach ......... 192 
Breccia in the Flysch, between Le Sepey and Aigremont ...... 195 
Generalized section across the Clogher-Head inlier ............... 228 
Section along the coast from Cooshaun, near Dunquin, to Owen 230 
