106 



INDEX 



Heredity continued 



acquired characters, 7 3 21 ; 

 Carriere on, 7 ; Darwin on, 7 



Hiptage, climbing power in abey- 

 ance and renewed, 47 



Hunter, on the origin of climbing 

 stems, 46 



Huxley, misstatemeiit of Lamar- 

 chism, 43 



INDIVIDUAL differences, 2 ; Wallace 



on, 3 



Induction, 5 



Influence of environment, 21 

 Injurious structures, no proof of, 16 

 Innate variability, uri proven, 2 

 Ivy, climbing roots of, 38, 39 



KAURI pine, description of xero- 

 phytic timber, 30 



LAN HESTER, on birth variations, 2 

 Lesage, on action of salt on 



plants, 61 

 Littorella lacustris, a hydrophyte 



by direct adaptation, 52 



MACCALLUM, experiments with 



Proserpinac-a, 35 



Malthus, misapplication of, 15 ; 

 not concerned with evolution, 15 

 Melampyrum, described, 61-65 

 Methods of proof, scientific, 5 

 " Misunderstandings," Thomson's, 



20 

 Modifications, power of acquiring 



explained, 13 



Monocotyledons, origin of, 90 ; 

 characters of proembryo and 

 embryo of, 91 - 93 ; dicoty- 

 ledonous, 94 ; arrest of axial 

 root of, 97 ; structure of stems 

 of, 98 ; leaves of, 98ff. 

 Monotropa, 61 



Monstrosities, hereditary, 89 

 M tiller, on the origin of climbers, 44 

 Musk, saprophytic by adaptation, 



70,71 



Mutations, origin of, 19 

 Mutilations and evolution, 17 



NARAVJSUA, tendril - climber by 

 adaptation, 40 



Natural selection, only a metaphor, 

 14 ; Wallace on, 3 



Offoxts SPIXOISA, experiments with, 



32 



Origin of floral structures, 5 

 Origin of species, 17, 18 



PARASITES and saprophytes, 60ff. ; 

 with chlorophyll, 60 ; anatomy 

 of, 61 ff. ; leafless, 61 ; origin of, 

 67 ; due to irritation, 67, 68 ; 

 degradations of, 72 ; in the 

 flowers, 72, 73 ; sexual cells 

 affected, 73 ; impossible to have 

 originated congenitally, 74 

 Passion-flower, parasitic, 69 

 Periwinkle, climbing induced, 46 

 Plants made succulent by salt, 51 

 Plasticity of plants, 54 

 Platycerium, adaptations of, 57 

 Plocamium, with adhesive pads, 41 

 Proofs of the heredity of acquired 

 characters, chaps, iv.-xi., 29-104 

 Proserpinaca, experiments with, 



35,36 



Protolemna, 90 

 Pyrola, 60 



RANUNCULUS, Nature's experiments, 

 35 



Ranunculus Ficaria, 95 ; aquatic 

 origin of, 52 



Ranunculi^ heterophyllus, experi- 

 ments with, 34 ; form of sub- 

 merged leaf hereditary, 37 



Reaumuria, secretions of salt by, 

 50 



Reid, on the principles of heredity, 

 7 ; on theory of adaptation, 14 



Response to physical irritations, 

 hereditary, 10 ; immediate, 35 



Reversion to wild forms, 88 



Roots, origin of edible, 79-81 ; 

 arrest of primary, by water, 96 ; 

 tuberous, 79ff. 



SALICORNEA, a succulent and physio- 

 logical xerophyte, 52 

 SaUsola, adaptations of, 53 

 Saprophytes, origin of, 69, 70 

 Scrophularineee , leafy parasites of, 

 61 



