8 AKT. 5. — N. YATSU : 



the compact bodies (vide infra) for young ova. It seems hardly 

 necessary to enter farther into the criticism of his paper. 



François ('91) observed the spindle bodies in the blood of 

 Lingida at Numea. " Le sang qui circule dans l'axe du pe- 

 duncule, outre les globules sanguins ordinaires, contient des cor- 

 puscules fusiformes plus ou moins régulier, dont la taille varie 

 de 20 à 100,"- de longueur. Ils present parfois quelques striés 

 longitudinals. Faul-il voir là des globules transformés ou des 

 fibres musculaires en formation qui se seraient détachés de la 

 paroi?" (p. 239). 



In the same year Coei ('91) described the spindle bodies in 

 his anatomy and histology of Phoronis. In this genus the body 

 [= Spindelförmiger Körper (Com)] was first described by Kowa- 

 levsky. It is formed in the " Gefâssperitonealzellen," set free 

 into the body cavity and then carried to the exterior through 

 the nephridium. It measures 11-43,«, as I calculate form Corn's 

 figures. In some cases near the middle part refractive granules 

 are found, and sometimes it is enclosed by a membrane which 

 presents a double contour. He concludes : " Die kleinen doppelt 

 kontourirten Formen dieser Körper lassen mancher Merkmale 

 erkennen, welche die Umbildung der rothen Blutkörperchen in 

 diese wahrscheinlich machen könnten " (p. 557). My friend, 

 Mr. I. Ikeda, who devoted himself during the past spring chiefly 

 to the studies of the " Gefassperitonealgewebe " of the Japanese 

 Phoronis, tells me that he has never met with the spindle bodies 

 in his slides. 



Blochmann ('00) observed the spindle bodies in the coagu- 

 lated ccelomic fluid of Lingula and positively proves the absence 

 of a nucleus in it (p. 118). But he gives no further account of 

 the structure and origin of the bodies. It seems he was not 



