JOURNAL OF THE COLLEGE OF SCIENCE, IMPERIAL UNIVERSITY 

 TOYKO, JAPAN. 



VOL. XVII., ARTICLE 5. 



Notes on Histology of Lingula anatina 



Brugière. 



By 

 Naohidé Yatsu, RigdkusJii. 



With Plaies I— II. 



CONTENTS. 



I. Introductory. 

 II. Formed Elements of the Ccelomic Fluid. 



1. Blood Corpuscles. 



2. Leucocytes. 



3. Spindle Bodies. 



A. Historical. 



B. Observations. 



a. Form and Structure. 



b. Occurrence. 



c. Development. 



d. What is the Spindle Body ? 



III. Otocysts. 



IV. Heart. 



V. Ovary and Testis. 

 VI. Literature cited. 



