210 



obtained, most of them in an excellent state of preservation. An exact record 

 was kept of the layer from which each specimen came, thereby rendering the 

 material of the utmost value for the study of variation. 

 This section (I!) is as follows (U.38 P.) : 



Ft. In. 



60 — Heavy compact limestone. Few fossils 27 



59 — Shaly limestone with riuliftrophia hjvx. Hebcrlelia, Monkulipcra, 



etc., P. laticosta toward the top 49 



58— Shaly limestone. Ihherteda (aa) some riahjslrophia and Hojines- 



ijuina 10 8 



57 — Shaly limestone. Il(ifines(jiii7La and Hibetlelia 2 



56 — Thin argillaceous limestone 16 



55 — Limestone. Base of Plalyslrophia zone S 



54 — Limestone 3 



53 — Limestone. Rnjinefquina 2 10 



52 — Limestone with Zt/f/onpira 5 



51 — Limestone with lUiprtesipiina 6 4 



50 — Very coarsely crystalline gray white-spotted limestone (> 



49 — Sandstone 1 



48 — Crinoidal limestone with fragments of Jluf. (aa) 4 



47 — Covered 7 



46 — Mostly limestone with Rvfiiiefijuma 5 4 



45 — Fine grained limestone wiih Rafincfiiuina 2 



44 — Covered 2 4 



43 — Limestone with Bryozoa (aa) 3 



42 — Limestone with Ii([lines(juiv(i 5 



41— Covered 1 10 



40 — Raftne?qnina. Bryozoa 8 



39— Covered 17 



38 — Thin layer of light colored limestone with Rafnei^qnina (shells 



weather i ng red ) 1 3 



37— Covered 2 4 



36 — Same as 35 1 



35 — Limestone with D((/») ((?(('//« (aa). Bryozoa (aa) R(iii7>e.<(piina(iri\g- 



ments) 4 



34 — Limestone. Soft, gray. Dalmanclla (aaa) ^ 1 6 



33 — Covered : some exposed shale and limestone 12 



32— Thin limestones 1 8 



31 — Coarsely crystalline light gray limestone containing Dabiumella 



and Bryozoa 8 



30— Covered 5 6 



29— Compact limestone. DulmuneUa and Bryozoa 1 



28— Shale 4 



27 — Limestone 4 



26-Shale 7 



