Quarterly Journal of Microscopical Science, Volume 15

acid alga algæ alimentary canal Amphioxus animal antheridia antherozoids apothecia appearance atrial chamber axis bands become blastopore body capsule carpogonium cavity cells central centre chlorophyll cilia circular coat cœlom colour condition conidia conjugation connection containing corpuscles described diameter distinct dorsal duct embryo epiblast epithelium examination exhibited external fibres fibrous figure filaments fluid formation fungi genus glands granular granules Hubrecht hypha hyphæ hypoblast invagination lateral branches layer Lichens longitudinal mass membrane mesoblast microscope microzoospores minute muscular mycelium Nemerteans nuclei observed oogonium oosphere organs orifice papillæ parasite Penicillium pharynx plants Plate portion present primitive probably proboscis produced protoplasm pulp regard remarkable round seen segment Selachians sexual sheath side similar space species specimens spindles spines spleen spores sporocarp stage stained structure substance surface terminal Thallophytes thick tion tissue transverse section tube vertebrates wall XV.-NEW yelk zoospores zygospore