196 INDEX 



Polypodium, 121, 163, 164 



Polystichum, 6 



Potting, 141, 148, 164, 165 



Prothalli, dividing the, 36, 64, 116, 123, 128, 130 



„ in the dark, 140 



„ with several plants, 84, 85, 102 

 Prothallus, 11, 32, 40, 134 

 Pteris aquilina, 163 



Reproduction, mode of, 133 



Royal Botanic Society Certificates, 57 



Royal Horticultural Society Certificates of Merit, 44 

 ,, „ ,, Fern Conference, 22 



,, ,, ,, Fern Exhibition of 1890, 23, 41 



,, „ ., First-Class Certificates, 45 



„ „ ,, Hybrid Ferns and crossed varieties, 24 



,, ,, ., Medals, 42 



Scolopendrium vulgare variety crispum, 8, 33 ; variety crispum- Cowburni, 170 



varieties, 39, 67, 90, 92, 94, 97, 99, 103, 105, ro8, 109 

 lis, 116, 117, 120, 121, 123 

 Scott, Dr. D. H., F.R.S., on Fern-crossing, 34 

 Skipjack, the, 125; impregnation by aid of, 128, 135, 142 

 Slugs and slug-traps, 143, 144 

 Soil, 139 



Spermatozoids, 134 



Spores, raising plants from, 2 ; mixing, 12-39; self-sown, 70, 168; sowing, 27, 137, 141 

 Sterile Ferns, 8, 170 

 Sterility of hybrids, 13, 171 



Testacella haleotidea and T. Maugei, useful slugs, 143 

 Todea, 161 



Variation in vigour of Ferns, 156 

 Variegated Ferns, 31, 97 

 Vegetable pests, 145 



Watering Ferns, 147, 166 

 Wild Fern varieties, 10, 68 

 Willesden waterproof shading, 141 

 Wire gauze in lieu of glass, 141 



Printed by Ballantyne, Hanson & Co. 

 Edinburgh and London 



