128 



Part III. — Tiventy-seveoith Annual Beport 



Fig. 



•■it. 



28. 

 29. 

 30. 

 31. 

 32, 

 34. 

 35. 

 36. 

 37. 

 38. 



Egg of Lot Ic. of Herring Spawn, 2nd March 1908 — hp. blastopore, 



hcl. head. 

 Egg of Lot IIIc. ,, 



lie. 



33. 



Ic. 

 IIIc. 



Ic. 



Ic. 

 IIIc. 



Ic. 

 IIIc. 



Ic. 



3rd March 1908. 

 5th 



9th 

 11th 



13th 

 19th 

 24th 



19 

 19 



white granular masses on its exterior. 

 39-46. Enlarged views of the Organisms comprising 

 patches shown in Fig. 38. 

 Egg of Lot Ic. of Herring Spawn, 10th April 1908. 

 IVb. „ 29th Feb. „ 



Dead egg. It has 



the white 



47. 

 48. 

 49. 

 50. 

 51. 

 52, 

 53. 

 54. 

 55. 

 56. 

 57. 



IVc. 



5th March 

 11th 



bp. blastopore. 



9th April 1908. 

 IVc2. „ 18th March 1908. 



Mouth of Larva of Herring just hatched. 



Larva of Herring just hatched, 19th March 1908 .... 

 Head of Larva just released from the Egg, p. 



Portion of one of the white granular masses shown in Fig. 38. 

 Magnified. 



19 



Letters Used in Plate I, 



b. — blastodisc. 

 bp. — blastopore. 

 or. — crystal. 



de. — depression between the blasto 

 disc and the yolk. 



hd. — head, 



ht. — heart. 



i. — inner investment. 



o. — outer , , 



pt.— protoplasm point on periblast. 



