The single-imaging optic of the mammalian eye offers some distinct visual advantages. Such lenses can take in photons from a wide range of angles, increasing light sensitivity. They also have high spatial resolution, resolving incoming images in minute detail.

For a wide class of connected open sets U, not necessarily simply connected, one proves the existence of a harmonic function on U having given boundary value (satisfying suitable integrability conditions) by taking the sup of the subharmonic functions having this boundary value.

Steaming up the Adriatic aboard ex-King Farouk's former pleasure boat (now renamed Freedom), Egypt's President Gamal Abdel Nasser arrived last week at the beautiful Yugoslav seaport of Dubrovnik.

Mitochondria, like the phospholipids, have been investigated when the polyembryo of Ageniaspis had the form of a tube (string).