INDEX. 85 



Page. 



Mount Vernon pear, pollination experiments 50 



Effect of water on fruiting 77 



Miiller, work on fertilization of flowers 10 



Norfolk, weather record 23 



Old Dominion orchard, account 20 



weather observations 23 



Pear, blight, eff"ect on fruitage 80 



flower, anthers 15 



descrijition 13 



flowers, different ways of opening 15 



insects, visiting 79 



fruits, development 17 



falling 17 



trees, diseases 80 



leaf blight 80 



varieties, propagation 22 



Pears, general conclusions on experiments 81 



injury of scab fungus 32, 80 



practical conclusions on experiments 82 



Pollen, carried by insects 16 



effect on fruits 55, 72 



influence of weather 16 



injury to by rain 77 



Pollination experiments, description 80 



methods at Geneva 33 



of flowers, method 25 



Pound pear, jioUination experiments 50 



Fyrus sinensis (see De la Chene). 



Quince, results of pollination experiments 81 



Rain, effect on blooming 77 



insect visits 77 



pollen 77 



Rochester, experiments 27 



details of the work 28 



weather during 28 



weather record 19 



Scab of pears 32,80 



Seckel pear, i)ollination experiments 50 



Self and cross-pollinated fruits, summary of differences 72 



seeds, contrast between 74 



fertile pears, list 54 



fertilization, Darwin's conclusions regarding 9 



sterile pears, list 54 



plants, list 12 



Sheldon pear, pollination experiments 51 



Slosson orchard, account 83 



Smith orchard, account 32 



Sprengel, observations on fertilization of flowers 9 



Superfin pear, pollination experiments 52 



Suvenir du Congres, pollination experiments 52 



Synopsis of the experiments 34 



Tables, explanation 56 



Temperature, effect on blooming 78 



fecundation 77 



