Contents. 



greens. Position of buds. Mathematical order. Symmetry and welfare of 

 tree secured. Variety of habit Fitted for soil Cl'imate and place in the 

 solar system. Power of the bud. Young fruits. Structure of buds. Food 

 stored up. The potato. Beet and Parsnip, Century plant. Orchis. 

 '>ns->eal. Structure of seed. Perfection and variety of machinery. 

 Relation of plants and animals. Effect of each on the air. Vegetable 

 kingdom subservient to the animal. I ts support. Oak galls. Plants respond 

 to the insect's instinct. Fertilization of plants by insects. Squashes. For- 

 get-me-nots. Orchids. Results 126 



LECTURE VI. 



PRO; or YARir.TIFS AND THF.IR FINAL CAUSE. 



Origin of specie*. May be varied for a wise purpose. Living and fossil forms, 



parts of one whole. Four plans of structure. The rocks the true record. 



Mar be mistranslated, but not changed. Unity of plan in the Divine mind. 



nigcs that favor development n,.m Darwin. 



.. For a definite purpose Adapts species 



i -i man. Definition of varieties. 



n from Gray. Final cause. Reference toman. Beauty 



iom of life. Organs of plants. Antli. 



Petal-, wers. Propagation of double plants. Fleshy fruits. 



"f beauty in some plants. Of fruit in others. Two series according to 



- ltd. - Indications 



in wild plants. Exceptions. Some plants for a double purpose. Vegetable 

 kingdom for the animal. Appears primarily for itself. Multitude of germs, 

 wheat represent food and plant life. Use of soft fruits Plants 

 and animals constructed Jor man as an intellectual being. Increase of beauty 

 not for the plant. Varieties offer condition of continual progress. Develop- 

 ment M urable scepticism. Geology must explain 

 origin of species. Law 01 .dence of design and wisdom 148 



LECTURE VII. 



CHEMICAL ELEMENTS AND THEIR MUTUAL RELATION. 



Argument for design may rest on collocation alone. Character of Creator 

 learned from the very proofs of His existence. Number of elements known. 

 Results secured by their nature and relative quantity. Fixed laws of 

 combination. Neither matter nor force lost. Pillars of organic life. Evi- 

 dence of design in the constitution of matter. Equilibrium, how restored in 

 the four elements Balanced affinity. Nature of their compounds. Oxygen 

 specially considered. Its compounds. The air. Original condition of 

 matter. Oxygen in the air a residual substance. Essential to animals. 

 form the tissues and secures activity. Produces artificial light and 

 heat. Common and active state. Ozone. Affinity of oxygen varied by 

 temperature. Hydrogen. Basis of flame Its inflammable compounds 

 Combination of properties fitting it for a light-producer Combines with 

 carbon to produce light Summation of properties. Its fitness for organic 

 structures. Constant change in animal bodies, Relation of hydrogen to 

 nitrogen Nitrogen adds to weight of atmosphere. Moderates the action of 

 hydrogen. Negative properties. Nature of its compounds. Carbon. Dif- 

 ferent forms. Supplements hydrogen in combustion. As an element, always 

 solid. Coal. Indestructible at common temperature. Carbonic acid 1 



