Part 77

---- ---- ---- in Cryptogams, 195, 196

---- ---- ---- denial of, 285

---- ---- ---- in Ferns, 135, 196-197

---- ---- ---- in flowering plants, 194

---- ---- ---- Grew on, 61, 62

Shrubs, Ray's classification of, 30, 34

Sibbald, 281

Solms-Laubach, on Williamson, 256, 257

---- ---- on Scott, 258

Sorby, Williamson and, 251

South Kensington, Science Schools at, 261, 262

Species, critical, 201

---- "lumping" of, 201

Species Filicum, 145, 146

Spencer, Herbert, 80

Sphenophyllum, Williamson and, 255-256

Starch, extraction of, 160, 161

Stems, annual rings in, 57

---- comparative anatomy of, 51, 56

---- modified, 57, 58

---- secondary thickening in, 56

Sternbergiae, Williamson on, 252

Stigmaria, Williamson on, 257

Suminski, sex in Ferns, 196-197

---- and Schleiden's theory, 197

Susceptibility, Ward on, 268

Sutherland, Edinburgh Professor, =281-282=

Symbiosis, physiological aspect of, 269