- Protea abyssinica
- Protective Suit
- Proterospongia
- Protomyxa Feeding
- Protozoa from the gut of the wood-feeding cockroach
- Provosts prison
- Præanaspides præcursor, One of the Fossil Syncarida, from the Coal-measures of Derbyshire
- Psalterion. Twelfth Century
- Psalterium
- Psaltery to produce a prolonged sound. Ninth Century
- Pseudargiolus Butterfly
- Pshaw,I can't find any diamonds
- Pterichthys, the Wing Fish
- Pterocera scorpio
- Pterodactyls
- Pterostichus opulentus
- Pterostichus opulentus - Larva
- Pthah
- Public Execution
- Public Penance
- Public Square and Perry Monument, Cleveland, Ohio
- Puddings
- Pueblo Pottery
- Puff adder
- Pulex irritans, female
- Pulliar
- Pulling in a Dislocated Shoulder—an actual experience of mine in India
- Pulo Condore Buffalo
- Pump at Pöchlarn
- Punches Showmen
- Punishing a Boatman
- Punishing an Interpreter
- Punishment by Fire
- Punishment for Insolence to a superior
- Punishment of a Woooden Tube
- Punishment of the Hurdle
- Punishment of the Swin
- Punishment of the Tcha, or Cangue
- Punishment of the Wooden Collar
- Pupa of flea
- Purple Martin
- Pursued by the arrows of the natives
- Pussy Cat, Pussy Cat Where Have You Been
- Putt with your ear on the hole
- Putting a wreath on a animal
- Putting an exact science
- Putting fresh sand in the bird cage
- Putting the shot
- PX Divider
- Pylocheles miersii, a Symmetrical Hermit Crab
- Qala'at El-Hosn
- Quaker Corn Meal Poster
- Quaker Wheat Berries Poster
- Quarrels
- Quarte
- Quarter-back taking the ball
- Quebec
- Queen Adelaide
- Queen Anne Boleyn
- Queen Berengaria, Spain