Fig. 197. CERVUS MEGACEROS CUVIERI. 



THE PRE-ADAMITE EARTH. 



CHAPTER X. 



531. Examination of orders. 532. Relative numerical proportion. 533. 

 No progression discoverable in these. 534. Examination of generic 

 development. 535. Similar result. 536. In the Kadiata and Mol- 

 lusca. 537. Annulata. 538. Vertebrata. 539. No progress in- 

 dicated. 540. Organs of ancient animals. 541. Examination in 

 relation to respiratory organs. 542. Lower divisions. 543. Bran- 

 chial respiration. 544. No essential change. 545. No progression 

 observable. 546. Tracheal respiration. 547. Pulmonary respira- 

 tion. 548. Composition of atmosphere unchanged. 549. General 



LARDNER'S MUSEUM OP SCIENCE. L 145 



No. 153. 



