CONTENTS. 



fertilised plat is of the later generations, and the sterility of 

 their first-pr )duced flowers Uniform colour of the flowers 

 produced by the self-fertilised plants The advantage from a 

 cross between two distinct plants depends on their differing in 

 constitution Page 28-62 



CHAPTER III. 



SCBOPHUIARIACE^E, GESNEEIACE^, LABIAT2E, ETC. 



Mimulus luteus ; height, vigour, and fertility of the crossed and 

 self-fertilised plants of the first four generations Appearance 

 of a new, tall, and highly self-fertile variety Offspring from a 

 cross between self-fertilised plants Effects of a cross with a 

 fresh stock Effects of crossing flowers on the same plant 

 Summary on Mimulus luteus Digitalis purpurea, superiority 

 of the crossed plants Effects of crossing flowers on the same 

 plant Calceolaria Linaria vulgaris Verbascum thapsus 

 Vandellia nummularifolia Cleistogamic flowers Gesneria pen- 

 dulina Salvia coccinea Origanum vulgare, great increase of 

 the crossed plants by stolons Thunbergia alata .. 63-97 



CHAPTER IV. 



CBUCIFER^E, PAPAVERACEJE, RESEDACE.E, ETC. 



Brassica oleracea, crossed and self-fertilised plants Great effect of 

 a cross with a fresh stock on the weight of the offspring Iberis 

 umbellata Papaver vagum Eschscholtzia californica, seed- 

 lings from a cross with a fresh stock not more vigorous, but 

 more fertile than the self-fertilised seedlings Keseda lutea and 

 odorata, many individuals sterile with their own pollen Viola 

 tricolor, wonderful effects of a cross Adonis sestivalis 

 Delphinium consolida Viscaria oculata, crossed plants hardly 

 taller, but more fertile than the self-fertilised Dianthus 

 caryophyllus, crossed and self-fertilised plants compared for four 

 generations Great effects of a cross with a fresh stock 

 Uniform colour of the flowers on the self-fertilised plants 

 Hibiscus africamiB .. . 98-141 



