278 



Frazer.] ^4 o [April I, 



Township, Lancaster Co., found them all in one locality, viz: Frazer's 

 Point, a headland in the river about half a mile below Mason and Dixon's 

 line. 



Two of the original specimens have been submitted in turn to Prof. 

 Whitfield, of the New York Museum; Prof. Jas. Hall, State Geologist 

 of New York, and Dr. Joseph Leidy, of this city. 



Letters from the first two are found below. Dr. Leidy expressed no 

 definite view. 



In the face of the inability of such eminent authorities to determine 

 anything in regard to these objects, I feel reticence to be but the part of 

 sound wisdom. I will only add that these have been very faithfully and 

 accurately delineated of actual size by the artists, Mr. Faber and Mr. 

 Tuthe. (The latter transferred all the drawings to stone, besides making 

 the original sketch of No. 1.) The horizon whence these were taken is 

 believed to have been that immediately under the Potsdam, but in no case 

 can be ascribed to one more recent than the latter formation. 



A partial analysis by the undersigned of the very thin film out of which 

 one of these forms, not here represented, was made, here follows. Amount 

 obtained for analysis 0.0562 Gram : 



Moisture 2.13 



Silica 57.11 



Iron Sesquioxide 4.93 



Alumina 7.52 



Lime 5.93 



Magnesia 2.88 



Sum , 80.50 



Undetermined and loss 19.50 



Total 100.00 



The following are the letters from Prof. Whitfield and Prof. Hall, 



referred to above: 



"American Museum of Natural, History, 



Central Park, 77th street and 8th Avenue, 



New York, Oct. 9, 1878. 

 ''Dear Sir : 



******* 



"The articles sent are not fossils, nor are they organic — but present every 



appearance of sandstone pebbles of very fine texture. The annulations on 



the Orthocerasdike specimen" (Fig. 5) "are lines of fracture, and pass 



across the rock on each side, showing conclusively their nature." 

 ***"**** 



" In future I hope you may have better success than in the present 



instance. 



"I remain yours very truly, R. P. Whitfield." 



"New York State Museum of Natural History, 



Albany. 



Fig. 5. 

 "The enclosed material lies, apparently, obliquely to the lines of bed- 

 ding, and the influence of these lines' appears to affect or mark the enclosed 



