Balfour put forward the view that the polyp was the more primitive type, and that the medusa is a special modification of the polyp for reproductive purposes, the result of division of labour in a polypcolony, whereby special reproductive persons become detached and acquire organs of locomotion for spreading the species.
Haeckel, on the other hand, is in accordance with Balfour in regarding a Siphonophore as a medusome, that is to say, as a colony composed of medusoid persons or organs entirely.
Statistics.See Wyatt, Agricultural Ledger (Calcutta, 1895), p. 71; Balfour, The Agricuttural Pests of India (1887), p. 13; Eriksson and Henning, Die Getreideroste; the publications of the U.S. Agricultural Department; the Kew Bulletin; Zeitschrift fr Pjlanzeiikrankheiten, and elsewhere.
"ALEXANDER HUGH BRUCE, BALFOUR OF BURLEIGH Loth (or 6TH) Baron (1849-1921), British politician, was born at Kennet, Alloa, Jan.