INDEX. 7 5 



Page. 



Poultry, crossing 14-15, 69 



Price, experiments in crossing tomatoes 70 



Primrose, hybrid, breeding, progeny produced and causes 9-17 



hybridizing experiments in England, results 9 



Imperial, color, development and causes 68 



Propagation, vegetative, fluctuation, effect of environment 26-32 



Rabbits, long-eared and short-eared, cross, study 63 



Races of plants, heterozygote, Mendelian analysis 54—55 



Rats, crossing experiments, development and causes 69 



Recessiveness, principle of heredity in plant breeding, examples 7-8 



Recombination, laws and results 18-2S 



Rosenberg, study of Hieracium genus 64 



Riimker, von, experiments on cross-fertilization of rye 37 



Rye, cross-fertilization, experiments 37 



Segregation, natural laws and results 8-17 



Selection and hybridization, cross-fertilized species 53-54: 



self -fertilized species 47-53 



vegetatively propagated crops 46-47 



effect on cross-fertilized species 36-46 



self-fertilized species 32-36 



individual, self-fertilized plants 35-36 



mass, self-fertilized plants 33-34 



without artificial crossing 26-46 



Separation, a cause of latency of characters in plants 65-66 



Shull, G. H., experiments with hybrid corn, results 55-58 



method of breeding open-pollinated corn 44, 46, 55-56 



paper on causes of latency of characters of plants 65-70 



study of hybrid beans 56-57 



Silkworm, crossing experiments, development and causes 69, 70 



Simpson, Q. I., studies in crossing swine 69 



Sorghum, hybrid, evidenced by vegetati^x vigor 55 



Species of plants, cross-fertilized, effect of selection 36-46 



hybridization and selection 53-54 



self -fertilized, effect of selection 32-36 



hybridization and selection 47-53 



Sports, bud, vegetatively propagated 30-31, 35 



Strawberries, heterozygote species 54 



Surface, Frank M., study of close-fertilized species of plants • 30 



Sweden, Svalof, experiments in plant selection 25, 32 



Swine, crossing, development and causes 69 



Tomato, hybrids, studies 70 



Tomatoes, crossing experiments and results 70- 



northern and southern, alternation, results 61 



study of effect of location 61 



Tracy, S. M., study of cassava , 55 



W. W., sr., study of transformed tomatoes 61 



Tschermak, E. von, study of Chinese oats 70 



hybrid beans 56 



latency 65, 68 



Variations in characters of plants, fluctuating 23-25 



resulting from change of location 61-62 



Varieties of plants, running out 25-26 



105 



