462 C. ft. itlTCHCOCK — AMMONOOSUO DISTRICT, NEW HAMPSHIRE 



through the lower Ammonoosuc to join the Passumpsic waters at Woods- 

 ville (Wells river, Vermont). Between these two valleys and the field 

 of our inquiry there happens to be a fine development of Paleozoic- 

 strata with fossils, so that it is possible to know with certainty the age 

 of a part of the sediments. The conclusions of the early report are not 

 all sustained by our later studies, and I have thought it best on resum- 

 ing the investigation of the geology to commence with the fossils, deter- 

 mine their names and horizon, and follow the beds into their associations 

 with other rocks. 



Fossils 

 age and occ urrence 



The fossils from Fitch hill, Littleton, New Hampshire, were submitted 

 to Mr Charles Schuchert, of the National Museum, Washington, who 

 reports on them as follows : " The Littleton fauna is certainly middle 

 Upper Siluric. The species suggest the Niagara, and there is nothing 

 so recent as Lower Helderberg." * 



Owing to the delay in preparing the manuscript of this paper, Mr 

 Schuchert adds a later list f of the collection of the Littleton fossils in 

 the National Museum, arranged according to their occurrence in the 

 black shale or the limestone. In addition to those sent by myself, he 

 examined those gathered by T. Nelson Dale several years since. 



SPECIMENS FROM BLACK SHALE 



Cup coral. 



Favosites. 



Leptsena rhomboidalis (Walcott's Sirophomena rhomb oidalis). 

 Strophonella cfr. funiculata (found among Strophomena rhomboidalis). 

 Conchidium cfr. knighti (Pentamerus knighti of Billings). 

 Rhynchonella (Wilsoniaf) (Walcott labeled it "allied to Tremato- 



spira mullistriata"). 

 Atrypa reticidaris ? 

 Spirifer cfr. sulcatus. 

 Spirifer cfr. plicatella or S. niagarensis. 

 Pterinea cfr. emacerata. 

 Calymmene tail. 

 Dalmanites cfr. caudatus and limulurus (Walcott named it D. limu- 



lurus). 



SPECIMENS FROM LIMESTONE 



Stromatopora. 



Halysites catenularia Linne\ 



* From letter dated April 14, 1903. 



t The date of this letter is May 11, 1904. 



