Fig. 14 A series of transverse sections of the livers of Acanthias embryos of 

 different ages showing the development of the sinusoids which are represented 

 m solid black All sections, with the exception oi A, are taken at a plane equally 

 distant from the anterior end of the liver and the anterior end of the gall bladder; 

 all X 35. A, embryo 13.3 mm. long (S.C. 18) ; B, embryo 20.5 mm. long (S.C 5) • 

 C, embryo 28 mm. long (S.C. 6);Z), embryo 47.3 mm. long (S.C 11) 



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