An Arrangement and Description of minute and rare Shells. A descriptive List of a Variety of vegetable Seeds, as they appear when viewed by the Microscope. By the Editor. p. 629. CHAP. XII. Instructions for collecting and preserving Insects. A copious List of microscopic Objects. By the Editor. p. 665. ADDITIONS. p. 713. ERRATA. Page 16, line 22, _for_ lead _read_ led Page 20, line 6, _for_ Fig. T _read_ Fig. 1 Page 49, last line, _for_ usefully _read_ successfully Page 62, last but one, _for_ stop _read_ stage Page 80, line 22, _after_ microscope _add_ by Page 88, three lines from bottom, _for_ improvent _read_ improvement Page 95, line 2, _for_ R _read_ K Page 111, two lines from bottom, _for_ VK _read_ VX Page 115, line 12, _for_ g _read_ q Page 125, note, _for_ Fig. 13 _read_ Fig. 13* Page 145, line 17, _for_ cast of _read_ cast-off Page 153, line 21, _for_ unkown _read_ unknown Page 169, eight lines from bottom, _for_ is _read_ are Page 188, note line 9, _for_ preventatives _read_ preventives Page 195, line 7, _for_ exagon _read_ hexagon Page 238, line 16, _for_ scarc _read_ scarce Page 319, line 19, _for_ rise _read_ raise Page 346, line 18, _for_ bread _read_ bred Page 354, three lines from bottom, _for_ Fig. 1 and 2 _read_ Fig. 1 and 3 Page 445, line 18, _for_ immediate _read_ intermediate LIST OF THE PLATES, WITH REFERENCES TO THE PAGES WHERE THE SEVERAL FIGURES ARE DESCRIBED. Plate Page I. Various diagrams illustrative of vision and the optical effect of microscopes 29 II. A. Ibid.--Needle micrometer, 54.--Coventry’s pearl, &c. micrometers 59 B. Fig. 1. Wilson’s microscope and apparatus, 115.--Fig. 2. Ditto with a scroll 117 Fig. 3, 4. Small opake microscope and apparatus 118 III. Fig. 1, 2, and 4. Adams’s lucernal microscope and apparatus 64 Fig. 3. Argand’s patent lamp 69 IV. Fig. 1. Jones’s improved compound microscope and apparatus 92 Fig. 2. Jones’s most improved ditto, ditto 99 Fig. 3. Culpeper’s three-pillared microscope and apparatus 104 V. Martin’s improved solar opake and transparent microscope 106 VI. Fig. I. Withering’s botanical microscope, 123.--Fig. 2. Pocket botanical and universal microscope 124 Fig. 3. Lyonet’s anatomical microscope 122 Fig. 4. Transparent solar microscope and apparatus 113