its Diseases.?By Alfred U. Uoles, m.d., d.sc. f.R.s., Edin. Third Edition. With seven coloured Plates. London : J. & A. Churchill, 7, Great ^Marlborough Street, 1905. Price 10/6 net. The fact that the second edition of this small manual on the blood has been exhausted, and a third edition called for in such a short time notwithstanding the great increase, within reeent years, of the literature ...