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Rodents, top left: 1) Guinea pig (Cavia porcellus); 2) Alpine pika (Ochotona alpina, or Lagomys alpinus); 3) Hydrochoerus capybara; 4) Crested porcupine (Hystrix cristata). Top right: 1) Coypu (Myocastor coypus, or Myopotamus coypu); 2) Chinchilla (Eriomys chinchilla); 3) Eurasian beaver (Castor fiber). Bottom; left: 1) Brown rat (Rattus norvegicus, or Mus decumanus); 2) Black rat (Rattus rattus, or Mus rattus); 3) Norway lemming (Lemmus lemmus, or Myodes lemmus); 4) House mouse (Mus musculus); 5) Common vole (Microtus arvalis, or Arvicola arvalis); 6) European hamster (Cricetus cricetus, or Cricetus frumentarius); 7) Lesser Egyptian jerboa (Jaculus jaculus, or Dipus aegyptius). Bottom, right: 1) European ground squirrel (Spermophilus citellus); 2) Edible dormouse (Myoxus glis); 3) Red squirrel (Sciurus vulgaris); 4) Alpine marmot (Marmota marmota, or Arctomys marmota). Wood engravings, published in 1897.