xii List of Illustrations 



FIGURE PAGE 



64. Horse-chestnut flower 129 



65. Inflorescence of a Rose 133 



66. Barberry flowers 136 



67. Willow catkins 137 



68. Pear flowers 138 



69. Ivy flowers 139 



70. Flowers of Spindle Tree . . . . . . 140 



71. Flowers of Laurustinus 141 



72. Laburnum flower 145 



73. Horse-chestnut flowers 146 



74. Honeysuckle flowers 147 



Figs 2 and 32 are reproduced from the Journal of the Board of 

 Agriculture and Fisheries (Aug. 1911) by permission of the Con- 

 troller of His Majesty's Stationery Office; figs. 1 and 3 are from 

 photos kindly supplied by the Ontario Govt., 163, Strand, W.C.; figs. 

 6 and 51 are from photos supplied by the British Botanical Associa- 

 tion ; figs. 49 and 62 are from Tansley's Types of British Vegetation 

 (Camb. Univ. Press); figs. 5, 24, 30 and 56 are taken from the 

 Cambridge County Geographies of Worcestershire, Lanarkshire, 

 Breconshire and Nottinghamshire respectively ; fig. 4 is from 

 Seward's Fossil Plants, Vol. n. (Camb. Univ. Press); fig. 13 is from 

 a block kindly lent by Messrs A. Gallenkamp and Co.; figs. 7, 11, 15, 



16, 19, 20, 21, 22, 34, 42, 43, 52, 54, 55, 57, 59, 60, 61, 63 [(1) and (2)], 

 64, 65, 66, 67, 68, 69, 70, 73 and 74 are taken from H. Marshall 

 Ward's Trees (5 volumes, Camb. Univ. Press); figs. 8, 9, 10, 12, 14, 



17, 18, 23, 26, 28, 29, 31, 35, 36, 37, 38, 39, 41, 44, 45, 46, 47, 48, 50, 

 58 (lower), 63 [(3) and (4)], 71 and 72 are all from drawings and 

 fig. 33 from a photograph by Mrs Gregson, fig. 50 being copied from 

 a school drawing by G. W. Maw, Bootham School. Figs. 40, 53, 58 

 (upper) are from F. Darwin's Elements of Botany (Camb. Univ- 

 Press). Fig. 27 is reproduced by kind permission of Sir William 

 Schlich from his Forestry in the United Kingdom. 



