EXPLANATIONS OF THE PLATES. PLATE I. VARIOUS FORMS OF DIATOMACEE. PLATE II. ECHINUS-SPINE (Original), AND PODURA-SCALE (after R. Beck). PLATE III. SMITH AND BECK'S POPULAR MICROSCOPE. PLATE IV. ROSS'S LARGE MICROSCOPE. PLATE V. POWELL AND LEALAND'S SMALLER MICROSCOPE. PLATE VI. POWELL AND LEALAND'S LARGE MICROSCOPE. PLATE VII. SMITH AND BECK'S LARGE MICROSCOPE. PLATE VIII. DEVELOPMENT OF PALMOGLÆA AND PROTOCOCCUS (after Braun and Cohn). PLATE IX. DEVELOPMENT OF VOLVOX GLOBATOR (after Williamson). PLATE X. ARACHNOIDISCUS JAPONICUS (after R. Beck). PLATE XI. DEVELOPMENT AND REPRODUCTION OF SPHÆROPLEA ANNULINA (after Cohn). |
