Early in September both Mangasb~ and Menelek showed signs of activity, and on the 20th of Sq tember Makonnen, ras of Harrar, who up till then had beei regarded as a friend and quasi-ally by Italy, expelled all Italian from his territory and marched with 30,000 men to join tb negus.
T^s° 0[ hip SQ fr o i ?tr.
Putting q=a+,61+yj+bk, Hamilton calls a the scalar part of q, and denotes it by Sq; he also writes Vq for 01+yj+b ï¿½, which is called the vector part of q.
Thus every quaternion may be written in the form q = Sq+Vq, where either Sq or Vq may separately vanish; so that ordinary algebraic quantities (or scalars, as we shall call them) and pure vectors may each be regarded as special cases of quaternions.
If we put qo= Sq' - Vq', then qo is called the conjugate of q', and the scalar q'qo = qoq' is called the norm of q' and written Nq'.
Its surface measures 1325 sq m.; it,has a length of 255 m.
Bintang has an area of about 440 sq m., and is surrounded by many rocks and small islands, making navigation dangerous.
G, prefrontal; M, maxilla; J, poison-fang; Tr, transpalatine; Pt, pterygoid; p, palatine; Q, quadrate; Sq, squamosal; Pm, premaxilla; T.a, articular; Pe and Di, muscles.