1-2 EDWARD VII. 



SESSIONAL PAPER No. 22a 



A. 1902 



CONTENTS. 



Page. 



I. — 'Account of the Marine Biological Station of Canada ; its Foundation, Equipment and Work,' 



by Professor Edward E. Prince, Dominion Commissioner of Fisheries, Director of the Station, 1 



II.— 'The Effects of Polluted Waters on Fish-Life, ' by Dr. A. P. Knight, Professor of Animal 



Biology, Queen's University, Kingston, Ont 9 



III. —' The Clam Fishery of Passamaquoddy Bay, New Brunswick, ' (with four plates), by Dr. -Joseph 



Stafford, Department of Zoology, McCill University, Montreal 19 



IV. — 'The Flora of St. Andrews, New Brunswick,' by Dr. James Fowler, Professor of Botany, 



Queen's University, Kingston, Ont 41 



V.—' The Food of the Sea Urchin [Sirongylocentrotus),' by Dr. F. H. Scott, Physiological Labora- 

 tory, University of Toronto 49 



VI.—' The Paired Fins of the Mackerel Shark {Lamna),' by Professor E.'' E. Prince, Dominion Com- 

 missioner of Fisheries, and Dr. A. H. MacKay, Superintendent of Education for the Province 

 of Nova Scotia, Halifax, N.S , 55 



VII. — ' The Sardine Industry in relation to the Canadian Herring Fisheries,' by B. Arthur Bensley, 



B.A., &c., late Fellow in Biology, L^niversity of Toronto 59 



•The Clam, Mya arenaria, exterior left side (natural size). 



The Clam, Mpa arenaria, left ventral surface. 



The Clam, Mya arenaria, interior aspect. 



The Clam, anatomy, nerves, ovum, embryo, food, &c. 



Left pectoral fin of Mackerel Shark {Lamna), showing cartilaginous skeleton. 

 Right pectoral fin of Mackerel Shark (Lamna), showing cartilaginous skeleton. 

 Right pectoral fin of ScyUium, Acanthias, Heptanchus, Chimcera, Cestracion, Polyodon, 

 and Eaia. 



Plate L— 

 XL— 

 „ IIL- 

 IV.- 

 V.~ 

 VL- 

 M VIL- 



