Unexhaustiveness, [50]Uniform object, [162]Uniformity of change, [140];of space, [194]Vagrant area, [103];solid, [101]Veblen and Young, [36]Velocity, critical, [193], [195];of light, [131], [195];relative, [130]Volume, [92], [101]When, [107]Where, [107]Whole, [58]Within, [63]Young, Veblen and, [36]