Contents. 
PAGE. 
TAQARD Grp) IN LARC RS Weis g opie doles. cine ee inogien 6 o Coola aooelae mato. Vii 
ENTS LOWY INRVAUN SIMD EVANS os cil) Ss) gi Sse levetis omy shee toreherlel eile Bem eases fay 2 ba retracts 18 
TEPRISTQVACCIS) Se oh a cis esp ee ac vere er rae ee SP ae ae eaeee er tal eran epanes te xi 
TURPITEOTO TC CTIROUNTE | 3 eters ac Ne eee ese RN CC ne RR EP GA) a deer al Pe at a 3 
PART I.--Stratigraphic Paleontology. 
CHAPTER k—GRNERATURERATTONG = ..< 5.3 <beciticnehere aiaicke le eeetiaezeenes 7-9 
CHAPTER II.— FORMATIONS OF CAMBRIAN AGE.................-. 10-14 
Eandystone quartzite: ceraseieeerieicuenraice te ier len 10 
RGAE EON haNVASIROMYS “CoA a6 on oo Hold dé one boo us alll 
CHAPTER III.—FORMATIONS OF ORDOVICIAN AGE............-...-- 15-53 
Laitiatinnye limestone gies oa eee ae aera ene 15 
LErentonmhimestonesn meee esate iii oe 16 
MierJacksonburge sechiOnemeri- teers ocilee 18 
Eid sonmiiverrslatesteyemssnieeneeienorietecreriocre en 49 
CHAPTER IV.—FHORMATIONS OF SILURIAN AGE..................- 54-80 
Shawangunk—Green Pond conglomerate. ..... 54 
Medina—Longwood sandstone ............... 55 
INGA Dass SCC OMe. spate cl tea e elie ae 56 
Poxino island tshialetpanirss wale cuanto Sener 61 
IRORSAOKANNE IMMASROAS 5 ocosocobdccodonneados 61 
IDYGleie UINSAAY GIOMMNRYHOING cooga0dad on scmusgdoc 62 
Correlation of Decker Ferry faunas....... 72 
IRGMGCOUE WOAMEMOM Zohoboebooodepcosauuuoodd 7 
Wiamlliing: TramesiOmne coc.goeduad doovocogubeocade CK 
CHAPTER V.—FORMATIONS OF DEVONIAN AGE................-- 81-108 
Coeymansslimestoneyaaaaen aoe eee eee eee 81 
INewtiscotlamad: Ded Seelam arse a eketevencie rates elects 86 
Stommiylllepsand stoneware cermin eine ee ei 91 
IBecraktialimesionel cya union ce eer eels Sal 
TITS StOMMMD SC Se sec seep esc secu asec tsa ont cirava onc bten ayes 3 
Oniskamyarormiationusee reesei cence 93 
The Dalmanites dentatus zone............ 94 
The Orbiculoidea jervensis zone........... Of 
The Spirifer murchisoni zone........... aay 99 
IDOI OWS: Gane ee RAO pia Oe ceeracioroceaiaorco UaeenisiS 102 
Onondaga limestone: Rese ccs eee eee es 103 
INGwaounncligwGl!AAwie So glsdabedaboontaobeloucos 104 
INOMOS SHAS ate eee ete apap pas terse eters a 106 
IBEeliivall ent ae se Ais. eae cesta caval atte nan haheuniane laereatls 107 
Skunnemunk conglomerate .......:...2..-..- 108 
