INDEX TO APPENDIX. 



Alternation of Generations, 468. 

 Angiosperms, 460. 

 Antheridia, 466. 

 Antherozoids, 466. ^ 

 Archegonia, 466, 476. 



Bracken, 460, 468. 



Clay, 484. 



Crust of the Earth, 480. 



Cryptogams, 460. 



Endodermis, 475. 

 Epidermis, 473. 



Foliar gaps, 463. 

 Foot, 468. 



Gametophyte, 468. 

 Gymnosperms, 460. 



Humus, 486. 

 Hypodermis, 473. 



Iridusium, 463. 

 Loams, 487. 



Male Fern, 460. 



Needles, 470. 

 Nueellus, 475. 



Pericycle, 475. 

 Phanerogams. 460. 

 Pinnae, 461. 

 Pits, Bordered, 472. 

 Placenta, 463. 

 Pollen-tubes, 476. 

 Prothallus, 465, 470. 



Sand, 484. 

 Selaginella, 479. 

 Soil, 479 et seq. 



,, Mechanical Analysis of, 483. 



Origin of, 480. 



,, Temperature of, 493. 

 Soil- Air, 487- 

 Soil- Water, 489 et seq. 

 Sori, 463, 470. 



Sporangia (spore-cases), 463. 

 Spores, 464, 470. 

 Sporophyte, 468. 



Tracheid, 471. 

 Transfusion tissue, 475. 



495 



