INDEX 779 



'Whelks, 684 Yoldia, 646 



(White substance of Schwann, 27* Yolk, 18* 



[Winter eggs, -lol Yolk-glands, 222 

 iWood-louse, 524 See Oni#-n* 



; v Zoantharia, 181*, 214 



! Xiphosura, 612*, 617, 618, 619, 621, Zoanthm, 183, 184, 187, 188 

 64 69 Zocecmm, 314 



Zoo-geographical Regions, 8 

 Zooid, 38* 

 Zoology, 1* 

 Y Zoophyte, 118* 



YZoothdmnium, 88 

 ELLOW CELLS See Zooxanthetta. Zooxanthella, 61 



Yellow elastic cartilage, 24* Zygote, 70* 



END OF VOL. 1 



9 



RICHARD CLAY AND SONS, LIMITED, LONDON, AND BVSGAY. 



