Atrium, the. (heart), the. Auditory nerve, the. Auricles of the heart. Autolemures. Axolotl, the. Bacteria. Baer, K.E. von. Balanoglossus. Balfour, F. Batrachia. Bdellostoma Stouti. Bee, generation of the. Beyschlag, W., on evolution. Bilateral symmetry. origin of. Bimana. Biogenetic law, the. Biogeny. Bionomy. Bird, evolution of the. ovum of the. Bischoff, W. Bladder, evolution of the. Blastaea, the. Blastocoel, the. Blastocrene, the. Blastocystis, the. Blastoderm, the. Blastodermic vesicle, the. Blastoporus, the. Blastosphere, the. Blastula, the. the mammal. Blood, importance of the. recent experiments in mixture of. structure of the. Blood-cells, the. Blood-vessels, the. development of the. of the vertebrate. origin of the. Boniface VIII, Bull of. Bonnet. Borneo nosed-ape, the. Boveri, Theodor. Brachytarsi. Brain and mind. evolution of the. in the fish. in the lower animals. structure of the. Branchial arches, evolution of the. cavity, the. system, the. Branchiotomes. Breasts, the. Bulbilla. Calamichthys. Calcolynthus. Capillaries, the. Caracoideum, the. Carboniferous strata. Carcharodon. Cardiac cavity, the. Cardiocoel, the. Catallacta. Caryobasis. Caryokinesis. Caryolymph. Caryolyses. Caryon. Caryoplasm. Catarrhinae, the. Catastrophic theory, the. Caudate cells. Cell, life of the. nature of the. size of the. Cell theory, the. Cenogenesis. Cenogenetic structures. Cenozoic period, the. Central body, the. Central nervous system, the. Centrolecithal ova. Centrosoma, the. Ceratodus, the. Cerebellum, the. Cerebral vesicles, evolution of the. Cerebrum, the. Cestracion Japonicus. Chaetognatha. Chick, importance of the, in embryology. Child, mind of the. Chimpanzee, the. Chiromys. Chiroptera. Chirotherium. Chondylarthra. Chorda, the. evolution of the. Chordaea, the. Chordalemma, the. Chordaria. Chordula, the. Choriata, the. Chorion, the. development of the. frondosum. laeve. Choroid coat, the. Chorology. Chromacea. Chromatin. Chroococcacea. Chroococcus, the. Church, opposition of, to science in Middle Ages. Chyle. Chyle-vessels. Cicatricula, the. Ciliated cells. Cinghalese gynecomast. Circulation in the lancelet. Circulatory system, evolution of the. structure of the. Classification. evolutionary value of. Clitoris, the. Cloaca, the. Cnidaria. Coccyx, the. Cochineal insect, the. Cochlea, the. Coecilia. Coecum [Caecum], the. Coelenterata. Coelenteria. Coeloma, the. Coelomaea, the. Coelomaria. Coelomation. Coelom-theory, the. Coelomula, the. Colon, the. Comparative anatomy. Conception, nature of. Conjunctiva, the. Conocyema. Convoluta. Copelata, the. Copulative organs, evolution of the. Corium, the. Cornea, the. Corpora cavernosa, the. Corpora quadrigemina. Corpora striata. Corpus callosum, the. Corpus vitreum, the. Corpuscles of the blood. Craniology. Craniota, the. Cranium, the. Creation. Cretaceous strata.