316 



fUBJEcr rxDfJx 



Menoidium, 287, 289 



Mermis, 290 



Mesozoa, 180, 281 



Metopidia, 71 



MetoiiUH, 39, 40, 50, 288, 289 



Metrio'-nemus, 111 



Micro-r'ilariae, 185 



Microtendipes, 113 



Mikrothorax, 288 



MilnesiuTn, 128 



Molluscs, 87 e/ se(7.. 135, 139, 151, 



161, 187, 201, 202, 253, 291 

 Monas, 289, 290 

 Moniezia, 77, 81, 157, 160, 164, 165, 



166, 182, 184, 215, 217, 218, 219, 



224, 265 

 Monkey, 34 

 Monostyla, 71 

 Musca, 124 

 MuscuUum, 291 

 Mya, 90, 92, 187 

 Mycetozoa, 159 

 Myiasis, 130, 131, 136 

 Mysis, 101 

 Mytilus, 89, 90, 149, 231 



Naucoris, 118, 119 



Nematodes, 15, 62, 65, 69, 70, 77, 

 142, 160, 166, 185, 186, 212, 243, 

 258, 279, 281, 283, 286, 288 



Nematodirtis, 77, 78 



Nemertineans, 70, 142 



Neoaplectana, 75 



Nepa, 118 



Nephelis, 73 



Nephthys, 65 



Nereis, 72, 74, 139, 146, 153, 154, 

 155 



Nervous system, 99, 263, 264 



Notonecta, 117, 118, 119 



Notosolenus, 289 



Nucula, 88, 90 



Nyctotherus, 53, 178, 269 



Octopus, 151 

 Oicomonas, 289 

 Oligochaetes, 62, 72, 288, 291 

 Opalinids, 53, 178, 270 

 Opercularia, 40, 41 



Ophioderma, 85 



Ophryoscolecidae, 270 



Opisthohranchia, 91 



Opisthodon, 288 



OinstJwrchis, 77, 268, 286 



Orthonectids. 180 



Ortlwptera, 124 



Oryctes, 125 



Ostertagia, 38, 77 



Ostracods, 102, 106 



Os/rea, 89, 90, 151, 202, 227, 230 



Owenia, 72, 182, 183, 259 



Oxidation-reduction potential, 25, 

 33, 54, 115, 261, 262, 266 et seq., 

 286 



Oxygen, debt, 83, 104, 114, 123, 138, 

 152, 153, 236 et seq., 256; depend- 

 ency of consumption on tension, 

 43, 60, 67, 81, 85, 87, 89, 95, 101, 

 104, 113, 117, 123, 127, 139 et 

 seq., 153, 168, 241 et seq., 252; 

 — on salinity, 103, 154, 155, 252; 

 methods of determination, 9 et 

 seq.; — of removal, 15 et seq.; 

 toxicity, 43, 261, 262 



Oxytricha, 50 



Oxyuris, 78 



Palaemonetes, 107 

 Pallasea, 291 

 Paliwviyia, 108, 116, 291 

 Pamphagus, 287 

 Panox>aeus, 107 

 PaiJhia, 90, 187 

 Paracentrotus, 186, 202 

 Paralysis, 45, 66, 120, 122, 232 et 



seq., 255, 264, 285 

 Paraniaecium, 16, 43, 45, 46, 47, 50, 



51, 158, 159, 172, 177, 195, 204, 



271, 287, 289, 290 

 Parascaris, 77, 78, 79, 81, 160, 164, 



182, 185, 189, 193, 204, 212, 213, 



229 

 Patiria, 85 

 Pecten, 90, 202 

 Pectinaria, 72 

 Pelagia, 62 

 Pelamphora, 288 

 Pelmatohydra, 139 

 Pelodiniuni, 288 



