to unite to express the artist’s ‘‘ vortex ’’ (hence the name of the r4th century B.c. Mycenaean civilisa- tion can command. It was Col. (later Gen.) J. B. ale “Parathyroid Hormone,” J. ' Biol. Chem., 1924, 61, 711-727; and J. Leite de Vasconcellos, A. Figa (Oporto 1925)... . For Egyp- tian material, are