Xxi.; Guignard, Sur las anthrozoides et la double copulation sexuelle chez les vbgtaux angiospermes, Comptes rendus (1899), 128; Flaberlandt, Physiologische PJlanzenanatomie (Leipzig, 1909); Die Lichtsinnesorgane der Laubbldtter (Leipzig, 1905); R.
Xxi.; On the Prophases of the Heterotype Mitosis in the Embryo-sac Mother-cell of Lilium, Ann.
P. Migne, Troisibme encyclopedie theologique, xxi., xxii., 1857]; C. R.
Table Xxi It is instructive to inquire into the limiting efficiency of an engine consistent with the conditions under which it is working, because in no case can the efficiency of a steam-engine exceed a certain value which depends upon the temperatures at which it receives and rejects heat.
Xxi.- xxiii.) bear the distinct impress of the high ethical character of Yahweh's requirements originally set forth by Moses.