Prosser — Hamilton and Chemung Series. 129 



56. Tentaculites, sp. (a single impression). (rr) 



57. Orthoceras, sp. (fragments of two species). (f\ 



58. Orinoid stems. (rr) 



XIX B : \ Sherburne or Rexford falls, one mile east of Sherborne village. 

 The foot of the falls is 133 feet by level above the railroad, or 1,175 feet A. T. 

 The shales are coarser than those farther down the brook, quite blue, and 

 alternate with bine sandstone, some of the strata of w hich are two feet thick. 

 In the glen below the falls is a sulphur spring, and the place is well known 

 locally as a picnic ground. The following species were here collected : 



1. 



Spirifer granulosus (Con.), Hall and Clarke. 



(r) 





Spwifer jvmbriatus (Con.), Bill. 



(r) 



3. 



Spirifer mucronatus (Con.), Bill. 



(rr) 



4. 



Spirifer Tallin*, Hall. 



(rr) 



5. 



Tropidoleptus ca/ririaPtis (Con.), Hall. 



(r) 



6. 



Orthi.s Vanuxemi, Hall (i). 



('•) 



7. 



Orihoiketes Ohemungensis (Con.), Hall and Clarke. 



(rr) 



8. 



Amboccelia umbonata (Con.), Hall. 





9. 



Chonetes coronata (Con.), Hall. 



(rr) 



10. 



Ghonetes mucronata, Hall. 



(rr) 



11. 



Chonetes setigera, Hall. 



(rr) 



12. 



OJionetes scitula, Hall. 



(rr) 



13. 



Paloeoneilo constricta (Con.), Hall. 



(rr) 



XIX B\ Mad creek, just below the Sherburne reservoir at Harrisville, 

 one and one-half miles east of Sherburne village. The low er dam at the top 

 of these shales is about 240 feet above the railroad by surveyor's leveling, 

 making the altitude of this locality about 1,282 feet A. T. The rocks are 

 coarse, arenaceous Hamilton shales, alternating with shaly sandstones, and 

 characteristic Hamilton fossils are abundant, as for example, Spirifer granu- 

 losus (Con.), Hall; Tropidoleptus ca/rinat/as (Con.), Hall; Spvrophyton vel/wm 

 (Van.), Hall, mingled with some of the larger lamellibranchs. The' locks 

 form a small fall just below the lower reservoir dam, and at its base finer 

 shales occur. The coarse, shaly sandstones contain large numbers of per- 

 fect specimens of the Spirophyton velum (Van.), Hall, making an excellent 

 locality for collecting specimens of this interesting fossil. The complete list 

 is as follows : 



1. Spirifer granulosus i (Con.), Hall. (aa) 



2. Spirifer audaculus (Con.), Hall.=$'. medialis, H. (c) 



3. Spi/rifer mucronatus, (Con.), Bill. (c) 

 9 



