CONTENTS 
O F 
VOLUMES I. AND II. 
Sections. Page 
I. Praise of the Study of Botany ................ 7 
II. The Three Kingdoms of Nature ............... 13 
III. & IV. The different Kinds of Seed-vessels .............. 17 
V. Of the component Parts of the Seed .............. 21 
VI. Of the Uses of the several Parts of the Seed ............ 25 
VII. The Nature of our Atmosphere.. 35 
VIII. The Composition of Oxygen Air ............... 41 
IX. The Composition of Water ................. 43 
XI. The Connexion of Air with Vegetation ............. 47 
XII. Whether Oxygen is supplied to Seeds through any other Medium than Water 
percolating the Earth .................. 60 
XIII. On the fertilizing Power of Snow.. 67 
XIV. Of the Utility of Winds ... . 73 
XV. Why Rain promotes Germination more than Spring or River Water ... 75 
XVI. On the Power of certain oxygenated Substances to accelerate the Process of 
Germination .................... 77 
XVII. Of the Earth’s internal Heat. 85 
XVIII. The same Subject continued; with a particular Account of some Eruptions of 
Mount iEtna and Vesuvius, and the Earthquake at Lisbon ..... 93 
XIX. On Electricity as promoting Germination. 15 
XX. On Darkness as favourable to Germination.. 185 
XXI. On the Vitality of Seeds . 197 
XXII. Time of the Evolution of Seeds .. 205 
XXIII. Comparison of the Seed with the Egg ............. 207 
XXIV. Of the Motions of the Plumula and Rostel.213 
XXV. Appendages to certain Seeds.223 
XXVI. Dissemination of Seeds.225 
XXVII. Whether the future Plant be contained in the Seed.240 
XXVIII. On the Dissection of Seeds.247 
XXIX. The Seed the Emblem of the Resurrection.. 253 
XXX. Different Forms of Seeds.294 
XXXI. How to produce Seeds early in the Season, and in more Abundance . . . 295 
XXXII. How to generate the best Kind of Seeds. 301 
XXXIII. How to determine the Goodness of Seeds.. • 306 
XXXIV. On the Naturalization of Plants, Vol. II.. 309 to 574 
B 
