424 THEORY OF TKANSMUTATION. chap. xxii. 



CHAPTER XXn. 



OBJECTIOISrS TO THE HYPOTHESIS OF TRANSMUTATION CON- 

 SIDERED. 



STATEMENT OF OBJECTIONS TO THE HYPOTHESIS OF TRANSMUTATION 



FOUNDED ON THE ABSENCE OF INTERMEDIATE FORMS GENERA OF 



WHICH THE SPECIES ARE CLOSELY ALLIED OCCASIONAL DISCOVERY OF 



THE MISSING LINKS IN A FOSSIL STATE DAVIDSON'S MONOGRAPH ON 



THE BRACHIOPODA WHY THE GRADATIONAL FORMS, WHEN FOUND, 



ARE NOT ACCEPTED AS EVIDENCE OF TRANSMUTATION GAPS CAUSED 



BY EXTINCTION OF RACES AND SPECIES VAST TERTIARY PERIODS 



DURING WHICH THIS EXTINCTION HAS BEEN GOING ON IN THE FAUNA 



AND FLORA NOW EXISTING GENEALOGICAL BOND BETWEEN MIOCENE 



AND RECENT PLANTS AND INSECTS FOSSILS OF OENINGIIEN SPECIES 



OF INSECTS IN BRITAIN AND NORTH AMERICA REPRESENTED BY DIS- 

 TINCT VARIETIES falconer's MONOGRAPH ON LIVING AND FOSSIL 



ELEPHANTS FOSSIL SPECIES AND GENERA OF THE HORSE TRIBE IN 



NORTH AND SOUTH AMERICA RELATION OF THE PLIOCENE MAMMALIA 



OF NORTH AMERICA, ASIA, AND EUROPE SPECIES OF MAMMALIA, 



THOUGH LESS PERSISTENT THAN THE MOLLUSCA, CHANGE SLOWLY 



ARGUMENTS FOR AND AGAINST TRANSMUTATION DERIVED FROM THE 

 ABSENCE OF MAMMALIA IN ISLANDS IMPERFECTION OF THE GEOLO- 

 GICAL RECORD INTERCALATION OF NEWLY DISCOVERED FORMATION 



OF INTERMEDIATE AGE IN THE CHRONOLOGICAL SERIES REFERENCE 



OF THE ST. CASSIAN BEDS TO THE TRIASSIC PERIODS DISCOVERY OF 



NEW ORGANIC TYPES FEATHERED ARCHJJOPTERYX OF THE OOLITE. 



Theory of Transmutation — Absence of Intermediate Links. 



THE most obvious and popular of the objections urged 

 against the theory of transmutation may be thus ex- 

 pressed : If the extinct species of plants and animals of the 

 later geological periods were the progenitors of the living 

 species, and gave origin to them by variation and natural 

 selection, where are all the intermediate forms, fossil and 

 living, through which the lost types must have passed during 

 their conversion into the living ones ? And why do we not 

 find almost everywhere passages between the nearest allied 



