642 GENERAL COMPARISON OF THE FILICALES 
“ Renault’s drawings, would give a figure of 500-1000, while drawings of 
other early Ferns, such as Stauropiteris and Preridotheca, plainly show 
Name. Result of Countings. Typical Number. 
Kaulfussia, oan a. 7850 
Marattia, _ 2500 
Danaea, — 1750 
Angiopteris, - _ 1450 
Gleichenia flabellata, 838, 794, 695, 684 512-1024 
ais dichotoma, 319, 251 256 or more 
3 hecistophylla, 265, 272 256 a 
#8 circinata, 241, 242 256 
3 rupestris, var. glaucescens, 244, 232, 220 256 
Osmunda regalis, - 476, 462, 396, 373 256-512 
Todea barbara, 478, 445, 442; 225, 238 250-512 
>» superba, - 206, 306, 342 256 or more 
», hymenophylloides, II2, I15, 120, 124, 204 128 ey 
Lygodium dichotomum, 232, 246 256 
49 javanicum, 237, 238, 245 256 
- pinnatifidum, 128, 127 128 
Aneimia phyllitidis, 114, ILI, 104 128 
Mohria caffrorum, 107, 107, IOI 128 
Hymenophyllum Tunbridgense, 413, 416, 421 256-512 
Trichomanes reniforme, 247, 243 256 
Hymenophyllum sericeum, 216, 239 256 
‘iy dilatatum, - 121, 127, 127, 127 128 
is Wilsoni, 119, 121 128 
Trichomanes crispum, 51, 52, 59 64 
” rigidum, 32, 48, 56 32-64 
558 radicans, 46, 58, 62 48-64 
re javanicum, 38, 42, 48 32-48 
45 spicatum, 48 48 
4s pinnatum, 32, 48, 32 32-48 
Loxsoma Cunninghamii, ‘+ 64, 62, 63 64 
Alsophila excelsa, 64, 60 64 
3 atrovirens, 57, 62 64 
Cyathea medullaris, 57, 61 64 
e dealbata, 16, 8, 8, 16 8-16 
Dicksonia antarctica, 64 64 
35 Menziesii, 62, 63 64 
Dennstaedtia apiifolia, 61, 62 64 
Thyrsopteris elegans, — 48-64 
Davallia speluncae, 64, 64 64 
Polypodiaceae generally, — 48-64 
Notochloena sinuata, 24, 32; 32 24-32 
Sadleria cyatheoides, 16 16 
Ceratopteris thalictroides, 32 (16, Kny) 16-32 
that the spore-output was large. It may then be held that in the more 
primitive forms, and especially in those types which are represented in 
the Primary Rocks, the number of spores produced by the individual 
