"Transverse section of earthworm. A., Cuticle; B., epidermis; C.M., circular muscles; L.M., longitudinal muscles; D., a seta; C., coelom; Y.C., yellow cells; F., typhlosole; V.V., supra-neural blood vessel; S.V., sub-neural vessel; D.V., dorsal vessel; P., peritoneum; E., cavity of gut; G., endodermic lining of gut; N., part of a nephridium; R., opening of a nephridium; I., the nerve-cord; J., a nerve given off; K., giant fibres in the nerve-cord." -Thomson, 1916

Earthworm

"Transverse section of earthworm. A., Cuticle; B., epidermis; C.M., circular muscles; L.M., longitudinal…

"Reproductive organs of earthworm. N., Nerve cord; T., anterior testes; S., sacs of setae; R.S., receptacula seminis; s.f., seminal funnels; v.d., vas deferens; ovd., oviduct; ov., ovary; sv., seminal vesicles cut open; VIII.-XV., segmens" -Thomson, 1916

Earthworm Reproductive Organs

"Reproductive organs of earthworm. N., Nerve cord; T., anterior testes; S., sacs of setae; R.S., receptacula…