INDEX. 



161 



Spiual uerves, 110 



nerves, thoracic, 124 

 Spiue, frontal, 66 

 Spiral vessels, 81, 82 

 Spleen, 99, 114, 119, 122 

 Sporangium, 7, 11 

 Spore, 12, 39, 43, 77, 78 

 Sporophore, 77 

 Spot, anal, 30 

 Stage, micrometer, 6 



warm, 25, 26 

 Stalk, 34, 35 

 Stamens, 84, 85 

 Starch, 9, 10, 37, 89, 90, 93 

 Stems, 126 

 Sterigmata, 40, 44 

 Sternal artery, 69 



canal, 72 

 Sternum, 117 

 Stigma, 86 

 Stipe, 7, 43 

 Stoma, 10, 11, 83, 84 

 Stomach, 64, 70. 99, 113, 129 

 Stomach intestine, 17, 18 

 Strand, axial, 76 

 Streak, primitive, 147, 148 

 Subepidermis, 7, 8, 9, 76, 80, 81 

 Subcesophageal ganglion, 21 

 Superior abdominal artery, 69 

 Supporting lamella, 56 

 Suprabrauchial chamber, 60, 



65 



Supracesophageal ganglia, 72 

 Symmetry, bilateral, 14 



radial, 53 



serial, 14 

 Sympathetic ganglia, 110 



nervous system, 109 

 Symphysis pubis, 138 

 System, eudophragmal, 72 



nervous, 20 



Tadpole, 144 

 Tail, 116, 128, 145 

 Tail-fold, 150 

 Tapetum, 142 

 Teeth, 97, 142, 144 



Teeth, gastric, 71 

 of peristome, 78 

 Tel son, 73 



Testis, 20, 70, 94, 106, 123, 138 

 Testis, cell-division in, 94 

 Thalamencephalon, 107 

 Thallus, 41, 42 

 Theca, 85 



Thermometer, parnffine, 25 

 Third ventricle, 125 

 Thoracic ganglia, 72 

 Thorax, 128, 131 

 Thymus, 131 

 Tongue, 97 

 Trachea, 116, 131 

 Tracheae, 10, 81 

 Tracheids, 10, 79, 80, 81 

 Tradescantia, 93 

 Trichocyst, 32 

 Tricuspid valve, 137 

 Truncus arteriosus, 100, 103 

 Trunk, 96, 116, 128 

 Tuber cinereum, 109 

 Tympanum, 96, 97 

 Tympanic membrane, 96 

 Typhlosole, 18, 64 



Umbilicus inferior, 127 



superior, 127 

 Ureter, 106 123, 138, 139 

 Uterus, 138 



Uterus masculinus, 139 

 Urethra, 139 

 Urine-genital opening, 128 



pouch, 123 

 Urn, 147 

 Utricle, primordial, 49 



Vacuole, 40 



Vacuole, contractile, 24, 31, 34 



food, 24, 31, 34 



water, 24, 31, 34 

 Vagina, 138 

 Valve, mitral, 137 



semilunar, 137 



tricuspid, 137 

 Vane, 127 



