Skull anatomy by Leonardo da Vinci
Skull anatomy by Leonardo da Vinci. Historical artwork and notes on the anatomy of the human skull and teeth, by the Italian artist and scientist Leonardo da Vinci (1452-1519). This bisected skull shows the external structure (right), and dissected facial sinuses (left), the air-filled spaces inside the bones of the face. The diagram at lower left shows the teeth present in one half of the mouth: 4 incisors, 2 canines, 4 pre-molars, and 6 molars. Da Vinci was the first anatomist known to have correctly noted the number and root structure of human teeth. The notes are an example of his mirror writing, which was written backwards from right to left, and could be read in a mirror.
© SHEILA TERRY/SCIENCE PHOTO LIBRARY
Fair Exchange by George Studdy
Bonzo and the baby find fair exchange is no robbery. A rather alarming scene where the comic canine creation of George Studdy, Bonzo, sits happily sucking a baby's bottle while the baby gnaws contentedly on a large bone! A discarded rattle lies nearby while an inattentive nanny reads by the fire. Credit line must read: Estate of George Studdy/Gresham Marketing Ltd./Mary Evan"
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10268271
Hippopotamus mouth. The hippopotamus (Hippopotamus amphibius) is a large and heavy African herbivore. It can reach a length of over 3 metres, and can weigh over 3 tonnes. It has sharp canines that are used to attack mating rivals and defend itself. It can open its mouth to an angle of 150 degrees, compared to 45 degrees in humans. It feeds on vegetation in rivers and lakes in sub-Saharan Africa, emerging at night to feed on grasses. The hippopotamus communicates with a variety of grunts and rumbling noises.
© Mark Newman/Science Photo Library