Amid a multiplicity of professional duties I have appropriated a few spare minutes to the preparation of this little work. It must, under such circumstances, have many literary imperfections, for which I must crave the indulgence of the Profession. But I trust it embodies some useful and original principles and facts, that are, at least, entitled to a dispassionate consideration. I take this opportunity of thanking those Medical Gentlemen who so kindly, and so patiently watched several of the cases recorded in these pages.

48, Russell Square, Feb. 1st, 1843.