PLATES 



VOLUME I 



William Harvey frontispiece 



I. Primitive methods of incubation : (A) Egyptian, (B) Chinese facing page 46 



II. The oldest known drawing of the Uterus (gth century) . „ „ 82 



HI. Illustration from the Liber Scivias of St Hildegard {ca. 



1150A.D.) „ „ 96 



IV. A page from Leonardo da Vinci's Anatomical Notebooks 



{ca. 1490 A.D.) ........„„ 108 



V. Illustration from the De Formatione Ovi et Pulli of Fabricius 



(1604) „ „ 116 



VI. l\\\xstvdit\on itom Yiighmorc^s History of Generation {iS^i) . „ „ 134 



VII. Illustrations from Malpighi: Z)g O&o fwcM^flto (1672) . „ „ 168 



VIII. Reaumur's Illustration of his Incubators (1749) . . „ „ 198 



IX. Microphotograph of the yolk of the hen's egg at the time 



of laying, to show the vitelline globules . . . . „ „ 236 



X. Microphotograph of the yolk of the hen's egg, not yet 



liberated from the ovary, to show the stratification . . „ „ 288 



VOLUME II 



The frontispiece of William Harvey's Generation of Ani- 

 mals ( 1 65 1 ) ; Zeus liberating living beings from an egg . frontispiece 



XI. Microphotograph of the yolk of the hen's egg at the 

 eleventh day of incubation, showing its heterogeneous 

 state .......... facing page 836 



XII. Microphotograph of the yolk of the hen's egg at the second 



day of incubation, showing the cholesterol esters . . „ ,,1218 



VOLUME III 

 An embryological investigation in the eighteenth century frontispiece 



