18)  SPRING
         
421 Leafd, melting ice,        Walden Woods   329 Ice breaking        up   117 Emerging        lady's slipper   119 Ferns fronds, skunk cabbage   446 Luminous Walden        Pond, overcast sky  
19)  CONCLUSION
     
419 Sprouts in a rainstorm,        Beech Spring   008 Fall in Heywood's        Meadow   032 Thoreau's tombstone at        Author's Ridge, Concord