LIST OF ILLUSTRATIONS 



XIX 



Pennsylvania 



FIGURE 



409. Ripe Cone of Pine 



410. Other Cones 



41 1. Forest of Hard Woods and Conifers in Northern 



412. Lumbering in New York .... 



413. Fire Slash ....... 



414. Waste Land in Pennsylvania 



415. Waste Land 



416. Fire Train in Adirondacks .... 



417. Nursery where Young Trees are Started 



418. Planting Young Trees in the Adirondacks . 



419. Young Plantation in the Adirondacks . 



420. Young Plantation Sixteen Years after Planting 



421. Pollen of Pine . 



422. Seed of Pine 



423. Photograph of Pitcher Plant 



424. Leaves of Pitcher Plant 



425. Photograph of Sundew 



426. Diagram of Sundew . 



427. Venus's Fly-Trap 



428. Photograph of Birch Roots. 



429. White Waterlily . 



430. Waterlilies ; Hydrophytes . 



431. Cat-Tails .... 



432. Giant Cactus 



433. Sage Brush .... 



434. Diagram : Showing Epidermis o 



435. Bull Thistle 



436. Lady Slipper 



437. Long-Spurred Violet . 



438. Mistletoe .... 



439. Diagram of Sectional View of a Branch Infected with Mistletoe 



440. Tropical Vegetation 



441. CallaLily .... 



Agave, a Zerophytic Plant 



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PORTRAITS OF PROMINENT BIOLOGISTS 



Darwin 

 Agassi z 

 Huxley 

 Koch . 

 Linnaeus 

 Pasteur 



IM IM. v \..r 



. 30 



. 100 



. 170 



. 235 



. 303 



. 348 



