—, effect of arsenic on, C. Daubeny, xxxi, 346.

—, injurious action of gases on, Macaire, xxiii, 193.

Vegetable fecundation, remarks on, A. Gray, xxxi, 303;

A. J. C. Corda's views on, 317.f

— impregnation, Aldridge, xli, 62.

— life, tenacity of, as shown by a root taken from a mummy, xxi, 158.

— —, functions of, G. T. Burnett, xxi, 153.

— kingdom, rapid growth in, xxviii, 399.

— membrane and fibre, chemical composition of, xxxiii, 289.

— organography and physiology, H. Green, xxxviii, 49.