New Series, No. 206 (Vol. 52, Part 2). Price 10s, net. 
Subscription per volume (of 4 parts) 40s. net. 
MARCH, 1908. 
THE 
QUARTERLY JOURNAL 
OF 
MICROSCOPICAL SCIENCE. 
EDITED BY 
Sim RAY LANKESTER, K.C.B., M.A., D.Sc., LL.D., F.B.S., 
HONORARY FELLOW OF EXETER COLLEGE, OXFORD; CORRESPONDENT OF THE INSTITUTE OF FRANCE, 
AND OF THE IMPERIAL ACADEMY OF SCIENCES OF ST. PETERSBURG, AND OF THE ACADEMY 
OF SCIENCES OF PHILADELPHIA, AND OF THE ROYAL ACADEMY OF SCIENCES 
OF TURIN; FOREIGN MEMBER OF THE ROYAL SOCIETY OF SCIENCES OF 
GOTTINGEN, AND OF THE ROYAL BOHEMIAN SOCIETY OF SCIENCES, AND 
OF THE ACADEMY OF THE ILINCEI OF ROME, AND OF THR AMERICAN 
ACADEMY OF ARTS AND SCIENCES OF BOSTON; ASSOCIATE OF THE 
ROYAL ACADEMY OF BELGIUM; HONORARY MEMBER OF THE 
NEW YORK ACADEMY OF SCIENCES, AND OF THE 
CAMBRIDGE PHILOSOPHICAL SOCIETY, AND OF 
THE ROYAL PHYSICAL SOCIETY OF EDIN- 
+ BURGH, AND OF THE 
BIOLOGICAL SOCIETY OF PARI8, AND OF THR CALIFORNIA ACADEMY OF SCIENCES OF SAN FRANCISCO, AND 
OF THE ROYAL ZOOLOGICAL AND MALACOLOGICAL SOCIETY OF BELGIUM; 
CORRESPONDING MEMBER OF THE SENKENBERG ACADEMY OF FRANKFURT-A-M; 
FOREIGN ASSOCIATE OF THE NATIONAL ACADEMY OF SCIENCES, U-S., AND MEMBER OF THE 
AMERICAN PHILOSOPHICAL SOCIETY 5 
HONORARY FELLOW OF THE ROYAT. SOCIETY OF EDINBURGH, 
LATE DIRECTOR OF THE NATURAL HISTORY DEPARTMENTS OF THE BRITISH MUSKUM,; LATE PRESIDENT OF THE 
BRITISH ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE: LATE FULLKRIAN PROFESSOR OF 
PHYSIOLOGY IN THE ROYAL INSTITUTION OF GREAT BRITAIN; 
LATE LINACRE PROFESSOR OF COMPARATIVE ANATOMY AND FELLOW OF MERTON COLLEGE, OXFORD. 
WITH THE CO-OPERATION OF 
ADAM SEDGWICK, M.A., F.RBS., 
PROFESSOR OF ZOOLOGY AND COMPARATIVE ANATOMY IN THE UNIVERSITY OF CAMBRIDGE} 
SAG NTYS Je HICKSON, McAty ERSS 
BEYER PROFESSOR OF ZOOLOGY IN THE UNIVERSITY OF MANCHESTER) 
AND 
E. A. MINCHIN, M.A., 
PROFESSOR OF PROTOZOOLOGY IN THE UNIVERSITY OF LONDON. 
WITH LITHOGRAPHIC PLATES AND TEXT-FIGURES. 
f) é 
TLUNDON: 
J. & A. CHURCHILL, 7 GREAT MARLBOROUGH STREET. 
1908. 
Adlard and Son, Impr., ] ; [London and Dorking, 
