- "Earth" of the Fox
- 1) Sea-pier ( Arenicola piscatorum ) .— 2) Parchmental Bristleworm ( Chaetopterus pergamentaceus ).
- 1, 2) Sand worms ( Hermella ): 1) Tubes of Hermella alveolata with its inhabitants (2). 3) Shell tube worm ( Terebella emmalina )
- A cat cleaning her kitten
- A Cats Eye
- A Cats Eye
- A Kitten
- A Kitten playing
- A monkey
- A prairie dog town
- Aardvark
- American Coot
- American Goldfinch
- American Merganser
- American Pintail
- An Eight-Armed Cuttlefish or Octopus Attacking a Small Crab
- Avocet
- Bactrian Camel
- Balanoglossus clavigerus . (Young specimen, greatly enlarged)
- Baltimore Oriole
- Barn Swallow
- Belted Kingfisher
- Black and White Warbler
- Black Tern
- Black-capped Chickadee
- Blue Grosbeak
- Blue Jay
- Blue-gray Gnatcatcher
- Blue-winged Teal
- Bobwhite
- Bridgeworms - a) Bonellia viridis. B) Phascolosoma vulgare. C) Priapulus caudatus
- Bronzed Grackle
- Brown Creeper
- Brown Thrasher
- Brown-headed Cowbird
- Camel
- Canada Goose
- Cardinal
- Carolina Wren
- Casuarius uniappendiculatus
- Cat cleaning itself
- Cat sitting on some cloth
- Catbird
- Cedar Waxwing
- Chimney Swift
- Chipping Sparrow
- Cliff Swallow
- Common Crow
- Common Earthworm
- Common Mallard
- Crested Flycatcher
- Diagram of amœba
- Dickcissel
- Downy Woodpecker
- Dromedary (standing) and Bactrian Camels
- Dromedary Camel
- Early Life-History of the Salmon
- Eastern Bluebird
- Eastern Kingbird
- Eastern Meadowlark