The Shipley Collection of Scientific Papers, Volume 187

Amoeba antapical horns antapical spines apex apical horn appears autotomy bands body Bridgewater canal Bütschli Ceratium Ceratocorys chain characters Charles Atwood Kofoid chromatin chromosomes ciliated coenobia coenobium colonies conjugation contractile vacuole culture Dendrocometes Dendrosoma described diameter Dinoflagellates distal division center dorsal elongated epitheca figures fins fission flagellar pore Foraminifera gemmula genera genus girdle plates girdle widths Gonyaulax granules Harry Beal heteromorphic hypotheca individuals intercalary length longitudinal furrow marked material maturation meganucleus micronuclei midbody Murray and Whitting mutation nuclear nucleus oblique observed organism Paramecium Peridinidae Peridinium plankton polyedra polygramma postcingular posterior posteriorly precingular pronuclei protoplasm protozoa Psammosphæra pusule reproductive cells Saccammina San Diego Region schizonts Schütt seen showing skeletal skeleton soil species specimens spinifera stage Stein Steiniella structure subgenus Suctoria surface suture theca thecal wall tion transdiameter trichoceros tripos ventral area Ventral view Zool