182 



Maturation, 52 

 Maxilla, 112, 116, 122 

 Maxillary, 27, 136 

 Maxilliped, 112 

 Medulla, 35, 139 

 Medusa, 81, 84, 85 

 Mesentery, 31, 138 

 Mesoderm, 52 

 Mesothorax, 117 

 Metamorphosis, 44 

 Metaphase, 51 

 Metatarsus, 123 

 Metathorax, 117 

 Methyl green, 160 

 Methylen blue, 160 

 Microscope, 22, 25 

 Midrib, 99 

 Mitosis, 51 

 Mollusca, 143 

 Mounting, 153 



INDEX 



Mouth, 26, 27, 75, 85, 88, 111, 116, Parapodium, 95 



Olfactory, 35, 138 

 Operculum (opercle), 43, 134, 137 

 Ophiuroidea, 142 

 Optic chiasma, 36 

 lobe, 35, 138 

 Organ, 45 

 Osculum, 73 

 Ostia, 73 

 Ovary, 29, 78, 90, 113, 119, 130, 



Oviduct, 29, 88, 90, 119 

 Ovipositor, 118 

 Ovum. See Egg. 



PALP, 95, 122, 124, 128 

 Pancreas, 29 

 Paramecium, 57, 147 



118, 122, 128, 129, 136 

 Movement, 55, 59, 63, 93, 120 

 Mucosa, 41 



Muscle, 39, 41, 92, 96, 126, 128 

 Myriapoda, 144 



N 



XACREOTJS, 126 

 Xemathelminthes, 142 

 Xematocyst, 76, 81, 84, 85 

 Xephridia, 91 

 Xereis, 95 



Parenchyma, 100 

 Parthenogonidia, 69 

 Pasteur's solution, 105,1160 

 Pectoral, 28, 136 

 Pedal ganglion, 129 

 Pelvic, 30 

 Pennaria, 80 

 Pericardium, 28, 128 

 Periostracum, 126 

 Perisarc, 80, 83 

 Peristome, 62 

 Peritoneum, 31, 41, 92 

 Peroneal artery, 34 

 Pharynx, 90, 96 



Xerve cord, 91, 92, 93, 97, 114, 119 Phloem, 100 



tissue, 40 Photosynthesis, 71 



Xervous system, 34, 91, 114, 119, Physiology, 55, 59, 63, 69, 71, 77, 

 129, 138 93, 104, 108, 114, 120, 130 



Pia mater, 35 

 Pineal gland, 35, 139 

 Pinna, 98, 99 

 Pinnule, 98, 99 



Xeural groove, 43 

 Xormal salt, 160 

 Xostrils, 26, 27, 136 

 Xotes and drawings, 18 

 Xucleolus, 50 



, , 

 ^Pisces, 144 



Xucleus, 50, 55, 59, 63, 66, 71, 104 Pituitary, 36 

 Xutrition, 55, 60, 78, 120, 131 |Planula, 84 

 ; Plasma, 38 

 Plasmolysis, 71 



OBELIA, 83 . 

 Objective, 23 

 Occipito-vertebral, 32 

 Ocellus, 116, 122 

 Ocular, '23 



Platyhelminthes, 142 

 Pleurococcus, 66 

 Plexus, 37 

 Pollen basket, 123 



brush, 123 



comb, 123 



