261 
DGmemlicoreluisgode asd eka: nak, earache tale ee ah Gaetan r-@ 
iP NicsoUurypas Leo aris hOOLG) pre) aise ae Sener a 
Oe Nema LOM Ona ONnaliseN TCM |e: So eeccetaa seis = cle sees ee r-¢ 
G49)! JEBEL TGICELANTEY Gl stead SOs Brule a Gls cuca rete o ARE ReRee AePIO ots ir 
30: SelaistropialasirentOnensisMesprans sts sees te oe eee r-¢ 
31. Plectambonites sericeus (Sowerby)................... a 
See electors. picahelbe (Puy. oF. bho bc aes. .  lov ees r 
SSE ASODONA ASI tla nix lTIC lies. ayers ete Ste ee) eta G 
aby Prueba innenomectenie, Ullaveln oo Goon ade ed bems cou ues eae. r-¢ 
See ProLocrisinay exieuawUUdehin as lee en oy taco. a 
SOs aeunimrdchyasmutauism (Wunteh)) mites eo oe sas eek ape a 
Di ninidiebyamupAbIIS major Wirth) see a4.--- eae 4 @ 
38. Rhinidictya PEPCK A UII C Is 8 yes Syne og Be eed ¢ 
39. Rhynchotrema inerebescens (Hall).................. r-¢ 
40S Schizocrintsmenogdosusy laine yee rr ees crsjac sss @ 
Ales Sichopotellarcribrosay Wilrichta merrier ae es a = c 
49) Siimenojooimelleneixeulbing Wilt s> a Jececoesoepaone oe on @ 
A} ee Sbrophemnadinecunvata (Shepard)ras saa 4. fee eee aa 
44. Tetradellavsubquadrans Ulrich... 94022. akeces ss. r-¢ 
Ais Mbiereatynsirercsmnae bk} (I Pieaheotore)) yg ss nae 1 Bo es oo ed ic r 
46. Turrilepas canadensis Woodward................-.- r-¢ 
Ae Ay ZOsSpIracecunvinOs tris (blall\iee seey-niei 9 aeiciee ei che r-¢ 
Morpuy CREEK SECTION. 
About one and one-half miles down the Mohawk river from Port Jack- 
son on the south side of the river is an outcrop of the Trenton, Black river 
and Calciferous (Tribes Hill and Little Falls dolmite). 
The basal Trenton resting on the Black river in this outcrop contains the 
pebble-like masses of Stromatoporoids (Stromatocerium canadense Nichol- 
son and Murie) as at Pattersonville, and consisting of compact beds of dark 
crystalline limestone in which Strophomena abound. The difference in ap- 
pearance of this section and that at Pattersonville quarries 1s chiefly due to 
weathering. 
The Black river is underlain by a compact, nearly unfossiliferous blue 
limestone, which is probably the Birdseye (Lowville). 
Collections were made only from the thin-bedded Trenton above the crys- 
talline bed. Mesotrypa and Prasopora are most abundant about ten feet be- 
