LECTURE VI. 



PRODUCTION OF VARIETIES AND THEIR FINAL 

 CAUSE 



Origin of species. AT ay be varied for a wise purpose. Liv- 

 ing and fossil forms, parts of one whole. Four plans of 

 structure. The rocks the true record. May be mistrans- 

 lated, but not changed. Unity of plan in the Divine 

 mind. Changes that favor development theory. Quota- 

 tion from Darwin. Variation considered historically. 

 For a definite purpose. Adapts species to wide geographi- 

 cal range. To man. Definition of varieties. Cause not 

 known. Quotation from Gray. Final cause. Reference 

 to man. J! canty of crystal. Difference in kingdom of 

 life. Organs of plants. Anthers. Petals. Double flow- 

 ers. Propagation of double plants. Fleshy fruits. 

 Idea of beauty in some, plants. Of fruit in otJicrs. Two 

 series according to lines of development. Corn. - Sugar- 

 cane. Potato. J^omato. Indications in wild plants. 

 Exceptions. Some plants for a double purpose. Vegeta- 

 ble kingdom for the animal. Appears primarily for it- 

 self. Multitude of germs. Grains of wheat represent 

 food and plant life. Use of soft fruits. Plants and ani- 

 mals constructed for man as an intellectual being. In- 

 crease of beauty not for the plant. Varieties offer condi- 

 tion of continual progress. Development theory not Athe- 

 istic. Incurable sce'pticism. Geology must explain origin 

 of species. Law of variation, evidence of design and 

 wisdom. 



IN our last lecture we considered some of the re* 

 lations of plants to the world the varied structure 

 and nature by which different kinds are adapted to 

 soil, to climate, and to our place in the solar system. 

 It was also shown that plants have an obvious rela- 



