Index 483 



Skunnemunk conglomerate, 404 



Slate, 37, 74 



Slaty cleavage, 56, 73 



Slickensides, 54 



Slipper, 111 



Small fry, 157 



Smith, B, cited, 353, 454 



Smith, S. I., cited, 455 



Smith, William, cited, 185 



Smythe, C. H., cited, 300 



Snails, 97, 151, 163, 172, 175, 176, 177 



boat shell, 111, 151, 167, 168, 175, 176 



floating, 174 



land, 423 



mud flat, 152, 166, 172 



northern sand collar, 150 



purple floating, 86 



rock, 86, 97, 103, 127, 133, 134, 136, 140 



salt marsh, 176 



sand collar, 143, 150, 167, 175 



sand flat, 152 



seaweed, 122, 134, 136, 172 



southern sand collar, 150 



ten-ribbed, 140, 141, 143, 150 

 Snake Hill beds, 286 

 Sodus shale, 327 

 Spider crab, 131 

 Spiderlike animals, 423 

 Spiders, sea, 121 

 Spirifer murchisoni zone, 382 

 Sponges, 84, 95, 96, 123, 134, 136, 144, 172, 230, 259, 376 379 409 



boring, 109, 136, 144, 176 



finger, 136 



red, 144, 168, 176 



red-beard, 172 



silicious, 84 



sulphur, 144, 175, 176 



urn, 124 



yellow and green, 124 



