454 International Geological Congress. 



less, and the bedding planes more distinct. The remains found 

 were of Leptcena sericea and Or this tesiudinaria in about equal 

 proportions, generally greatly contorted and in various stages of 

 distinctness. The slates dipN. 80° W.>40°, and grade insensi- 

 bly above and below into nighty altered strata contorted and 

 seamed in every direction, especially the underlying beds. This 

 disturbed area is a local one, however, and much progress has 

 been made in this district in tracing out the foldings of the 

 slates. This fossiliferous bed is not far from the base of the 

 formation, and is not intercalated in the other members by fold- 

 ing in an overturned synclinal. 



The fossils found near Walden were at the junction of beds 

 of grauwacke and thin layers of fossil slates, exposed in the 

 quarries below the bridge and elsewhere. Leptcena sericea was 

 quite abundant at one point, and Orthis tesiudinaria was asso- 

 ciated but in less numbers, also 0. pectinella and a fragment of 

 Conularia probably Trentonensis. The fossils were finely pre- 

 served and the subjacent rock contained numerous small nodules 

 of soft, bituminous matter as noted by Horton in his Report to 

 Professor Mather in 1839.* They are often 10 mm. in diameter. 

 Several indistinct fucoid impressions appear on some of the 

 layers but none were recognizable. 



The rocks dip south westward at a moderate angle, and strati- 

 graphic studies in this district make it appear probable that 

 the fossiliferous beds are at a low horizon in the formation. 

 Further details of the stratigrfphic structure will be given in 

 the paper before noted. 



In conclusion, I wish to acknowledge my indebtedness to 

 Professor R. P. Whitfield for his kindness in determining the 

 greater number of the species for me, and for his aid and advice 

 at many times in the investigation. 



Abt. LVII. — Report of the American Committee-delegates to the 

 Berlin International Geological Congress, held Sept. 28i!/i to Oct. 

 3d, 1885; by Persifor Frazer, D.Sc, Secretary. 



The following report of the third session of the International 

 Geological Congress in Berlin, was made from notes taken by the 

 Secretary of the American committee for this session. These 

 notes were afterwards written out in full, with the kind assistance 

 of Professor Williams to whom the writer hereby expresses his 

 sincere obligations. It will be remembered that the inception 

 of this most important gathering was the action of a com- 



*3d Annual Report of Natural History Survey, p. 144. 



