INDEX. 



159 



Nuclear division, 94 



(Esophagus, 17, 30, 31, 33, 70, 



116, 119 

 Oil-drops, 6 



Olfactory lobes, 107, 108, 140 

 Olfactory nerves, 107, 108, 124 

 Olfactory pits, 151 

 Olfactory tract, 107, 108 

 Ouion, 94 

 Oophore, 75 

 Oosphere, 12 

 Opening, urino-genital, 128 



excretory, 67, 139 



genital, 67 



nephridial, 15 

 Operculum, 78, 113, 143 

 Ophthalmic artery, 69 

 Optic chiasma, 109, 125, 140 



commissure, 125 



lobes, 108, 124, 125, 126 



nerves, 140 



thalaini, 125, 141 



tracts, 140 



ventricle, 126 



vesicle, 150 

 Ora serrata, 126, 142 

 Organ of Bojanus, 62, 65 

 Ostia, 68, 69 



Ovary, 20, 70, 86, 105, 123, 138 

 Oviduct, 15, 20, 70, 105, 123, 139 

 Ovules, 85 



Palisade-cells, 84 

 Pal Hal cavity, 60 

 Palps, labial, 60, 61, 65 

 Pancreas, 99, 119, 122, 129, 145, 



151 



Pancreas, duct of, 129, 130 

 Pansy, 87 



Papillary muscles, 137 

 Paraffine thermometer, 25 

 Paraphyses, 77 

 Parenchyma, cortical, 80 



fundamental, 8, 9, 81, 82 



sclerotic, 7 



wood, 81 



Parieto-splanchnic ganglion, 62, 



65 



Parmelia, 41 

 Pea, 87, 88. 90, 91, 92 

 Pecten, 126 



Pectoralis major muscle, 118 

 Pectoralis minor muscle, 118 

 Pectoralis secundus muscle, 118 

 Pedal ganglia, 63 

 Pedicel, 84 

 Peduncles, 126 

 Pelvic cavity of kidney, 138 

 Pelvis, 112 

 Pericardia! cavity, 61, 62, 114, 



151 



Pericardial sinus, 68 

 Pericardium, 145 

 Perichaetium, 75 

 Peripheral nervous system, 21. 



110 



Peristome, 33, 78 

 Pes, 96, 129 

 Petals, 85 



Pharynx, 17, 97, 145, 150 

 Phloem, 80, 81 

 Phloem-parenchyma, 10 

 Phloem-sheath, 9 

 Physiological experiment, 38 

 Pia mater, 107 

 Pileus, 43 



Pineal gland, 107, 140 

 Pinna, 7, 128 

 Pinnula, 7 

 Pistil, 84 

 Pith, 80 

 Pits, 79, 80 



Pituitary body, 109, 125, 141 

 Plasmolysis, 49 

 Pleurococcus, 28, 29 

 Plumule, 88, 89 

 Pollen-grains, 85, 86 

 Polytrichum, 75 

 Pons Varolii, 141 

 Pontederia, 82 

 Pores, dorsal, 15 

 Posterior adductor muscle, 59, 



61, 65 



