66 



these bivalves are exceedingly rare throughout this formaton. la last 

 year's report this exposui'e was erroneously I'eferrecl to the calciferous 

 formation. 



The Trenton Formation. — A fine section of the lower measures 

 of this formation was observed and paced. It was some sixteen hundred 

 feet in length, situated on the western extension of the Canadian 

 Pacific Railway, a short distance from the Union Station, where a 

 denuded anticlinal is exhibited. The dips in diffei-ent parts of the 

 section were ascertained and noted, as also the strike and the fossils 

 observed. The dips were found to vary from 8° to 48" on the eastern 

 side of the section. 



The Utica Formation. — On the right bank of the lUdeau Eiver, 

 opposite the Rifle Range, an exposure of this formation, worthy of note on 

 account of its lithological character, was observed. Besides the ordinary 

 bituminous shales there occur, interstratified in a section som.e 1 2 feet in 

 thickness, ten or more bands of impure limestone, in some parts assum- 

 ing a nodular character, in othei's veiy compact, varying from 2 or 3 

 to 10 inches in thickness. These hold a large number of fossils, 

 as a rule veiy different from those in the overlying and 

 underlying shales. Whilst the shales hold numerous specimens 

 of Asapkus Canadensis (Chapman), associated with Triarthrics Becli 

 (Green) and orthids, the bands of limestone teem with Conidana Tren- 

 tonensis, Zygospira Headi ? (Bill.), Cahjmene senaria (Conrad), and 

 other forms of life. It was in one of these bands of impure limestone, or 

 one belonging to this series that Sip/ionotre(a Scotica (Davidson), a 

 prettily fringed Brachiopod, was found by 3Ir. .J. W. H. Watts, R.C.A., 

 its occurrence for the first time on this continent having but recently 

 been made known to science by Mr. J. F. Whiteaves in a paper read 

 before the American Association for the Advancement of Science in 

 August 1882. 



The whole respectfully submitted, 



(Signed) WM. P. ANDERSON, 



H. M. AMI, 



H. WATTERS. 



19th January, 1883. 



