96 PROCEEDINGS OF THE PITTSBURGH MEETING 



Presented without manuscript and illustrated with lantern slides; 15 

 minutes. Discussed by John M. Clarke. 



DISCOVERY OF ANTENNAE AND OTHER APPENDAGES OF MIDDLE CAMBRIAN 



TRILOBITES 



BY CHARLES D. WALCOTT 



Given without manuscript and illustrated with lantern slides and speci- 

 mens; 10 minutes. Discussed by J. M. Clarke and C. Schuchert. 

 In the absence of the author, the following paper was read by title : 



"MUTATIONS" OF WAAGEN AND "MUTATIONS" OF DE VRIES, OR REGTIGRA- 

 D AT IONS OF OSBORN COMPARED 



BY H. F. OSBORN 



At the request of their respective authors, the time for adjournment 

 having arrived, the two following papers were read by title : 



ON THE DERIVATION OF PALEOZOIC FAUNAS 

 BY E. O. ULRICH 



THE LABRADOR-NEWFOUNDLAND PALEOZOIC SECTION 

 BY CHARLES SCHUCHERT 



President Schuchert then expressed the thanks of the Society to the 

 Carnegie Museum, through Director W. J. Holland, for the many courte- 

 sies and the completeness of the arrangements made for the meeting. 

 Upon motion, the Society then adjourned. 



KeGISTER of THE PITTSBURGH MEETING, 1910 



R. S. Bassler Percy E. Raymond 



Samuel Calvin Rudolph Ruedemann 



William Bullock Clark Charles Schuchert 



John M. Clarke W. J. Sinclair 



C. R. Eastman T. W. Stanton 



August F. Foerste C. R. Stauffer 



C. N. Gould Mignon Talbot 



C. A. Hartnagel E. 0. Ulrich 



W. J. Holland Gilbert van Ingen 



F. H. KN0V7LT0N Charles D. Walcott 



W. A. Parks Stuart Weller 



0. A. Peterson David White 



Charles S. Prosser G. R. Wieland 



S. W. WiLLISTON 

 MEMBER-ELECT 



Chester A. Reeds 



