〃 39. Leaflet of Bramble, with its rust and brand intermixed. 〃 40. Spores of Bramble rust (_Lecythea Ruborum_) × 230. 〃 41. Fruit of Bramble brand (_Aregma bulbosum_) × 300. 〃 42. Leaflet of Raspberry with its brand. 〃 43. Fruit of Raspberry brand (_Aregma gracile_) × 230. 〃 44. Cluster of fruits of Rose brand (_Aregma mucronatum_) × 230. 〃 45. Fruit of Bramble brand (_Aregma bulbosum_) in active germination, with sporidia at the tips of the threads × 300. 〃 46. Fruit of Bramble brand (_Aregma bulbosum_) ruptured, with inner cell escaping × 250 (_F. Currey_). 〃 47. Portion of leaflet of Meadow-sweet with its brand. 〃 48. Spores of Meadow-sweet brand (_Triphragmium ulmariæ_) × 300. 〃 49. Spore of Meadow-sweet brand (_Triphragmium ulmariæ_) in germination, with sporidia borne on the germ-tubes × 300 (_Tulasne_). 〃 50. Sprig of _Thesium humifusum_ bearing Bastard-toadflax cluster-cups (_Æcidium Thesii_). 〃 51. Portion of leaf of same, with cluster-cups, enlarged. 〃 52. Leaflet of _Trientalis Europæa_ with its smut (_Tuburcinia Trientalis_). 〃 53. Spores of the same × 320. 〃 54. Spores of Potato smut (_Tuburcinia scabies_) × 320. (_Berkeley._) 〃 55. Leaflet of Alexanders (_Smyrnium olusatrum_) with its brand. 〃 56. Spores of Alexanders brand (_Puccinia Smyrnii_) × 320. IV. 57. Wheat-straw attacked by mildew (_Puccinia graminis_). 〃 58. Cluster of spores of corn-mildew, magnified (_Bauer_). 〃 59. Single spore of corn-mildew (_Puccinia graminis_) × 300. 〃 60. Portion of blade of grass with coronated mildew (_Puccinia coronata_). 〃 61. Portion of same enlarged, showing the pustules, or sori. 〃 62. Spore of coronated mildew (_Puccinia coronata_) × highly. 〃 63. Portion of leaf of Spear-thistle with its brand (_Puccinia syngenesiarum_). 〃 64. Spores of Thistle brand (_Puccinia syngenesiarum_) × 320. 〃 65. Leaf of Wood-anemone with brand (_Puccinia anemones_). 〃 66. Spore of Anemone brand (_Puccinia anemones_) × 320. 〃 67. Leaf of _Centaurea nigra_ with brand. 〃 68. Spores of Composite-brand (_Puccinia compositarum_) × 320. 〃 69. Leaf of Mint with Mint brand (_Puccinia menthæ_).