INDEX. 



Nitella, 42, 52 



Node, 42, 4 8, 55, 62, 70, 78 



Notochord, 169 



Nucleolus, 1 8 



Nucleus, of Amoeba, 18, 21; of 



ovule, 70, 85; of Vorticella, 92, 



94 



O. 



OBLIQUE muscles, 194 

 Occipital condyle, 216 

 (Enothera biennis^ 87 

 OZsophageal artery, 1 7 

 CEsophagus, of Bell-animalcule, 



9> 93 > of Anodonta, 109, 122; 



of Crayfish, 131, 148; of Frog, 



173, 208 

 Olfactory, lobes, 187, 239; nerves, 



187, 239; organs, 193, 249 

 Omosternum, 221 

 Opercular membrane, 163 

 Ophthalmites, 130, 153 

 Optic, commissure, 241 ; lobes, 



185, 240; nerves, r87, 241, 245; 



thalami, 186, 239; tracts, 241 

 Orbito-nasal nerve, 188 

 Organ of Bojanus, 1 10, i r 7 

 Os, cruris, 224; femoris, 224; pu- 



bis, 224 



Otolith, 121, 194 

 Ovary, of Anodonta, 112, 123; of 



Crayfish, 147; of Frog, 183, 



264; of Hydra, 100, io6j of 



Lobster, 147 



Oviduct, 147, 148, 184, 208 

 Ovules, 70, 85 

 Ovum, of Anodonta, 112, 123; of 



Crayfish, 139; of Frog, 184, 



264 ; of Hydra, 100, 106 ; of 



Lobster, 139 



P. 



PALATINE, bone, 218; nerve, 188 



Pallium, 1 08, 114 



Pancreas, 174, 205 



Papillae, filiformes, 195, 250; fun- 



gifonnes, 195, 250 

 Parasphenoid bone, 218 

 Parenchyma, 57, 63,64, 72, 79, 80 



Parieto-frontal bone, 217 

 Parieto-splanchnic ganglion, 112, 



120 



Pasteur's fluid, 6 

 Patheticus, nervus, 188 

 Pectoral arch, 172, 221 

 Pedal ganglion, 112, 120 

 Peduncle, 83 

 Pelvic arch, 172, 224 

 Pelvic vein, 179, 234 

 Penicilliwn, 30; Laboratory work, 



38 

 Pericardium, of Anodonta, in, 



116; of Crayfish, 133, 145; of 



Frog, 165, 201; of Lobster, 



*33, H5 

 Perilymph, 194 

 Peristome, 90, 93 

 Periotic capsule, 171, 217 

 Peroneal nerve, 193, 233 

 Pes, 1 60, 225 

 Petal, 8 4 

 Petiole, 82 

 Phalanges, 223, 225 

 Pia mater, 238 

 Pigment-cells, 196, 261 

 Pineal gland, 186, 239 

 Pinnule, 55 

 Pistil, 70, 84, 85 

 Pith, 72, 79 



Pituitary body, 186, 241 

 Pleuroperitoneal cavity, 165 ; 



membrane, 165, 201 

 Plumule, 71, 86 

 Pneumogastric nerve, 191, 243 

 Pollen, 70, 85 

 Posterior commissure, 186 

 Posterior tibial nerve, 233 

 Prcecoracoid, 222 

 Praenasal process, 170 

 Premaxillary bone, 217 

 Primine, 85 

 Primitive sheath, -257 

 Primordial utricle, 32, 45, 83 

 Pro-embryo of Chara, 47 

 Pro-otic, 217 

 Propodite, 151 

 Prosencephalon, 186, 239 

 Proteus Animalcule, 1 7 



