For a man to leave his footprints on the sands of time, he must be' endowed with a strong brain and neivous power. He must possess a sound, vigorous, healthy mind, in a healthy body — the power to conceive — t,he energy to execute But look at our Australian youth ! See the emaciated form, the vacant look, the listless hesitating manner, the nervous distrust, the senseless, almost idiotic expression. Note his demeanor and conversation, and then say, Is that a man to leave his footprints on the sands of time. Do paients. medical men, and educators of youth pay sufficient attention to this subject? Do they ever ascertain the c.mse of this decay ; andhaving done so, do they (as a strict sense of duty demands) seek the skilled advice of the medical man, who has made this branch of his profession his particular specialty, whose life has been devoted to the treatment of these ctses ? Header, what is your answer ? Let each one-answer for himse ! f. Pirents see tbeir pro- geny fading giadually before their sight, see them become emaciated old young men, broken down in health, enfeebled, unfitted for the battle of life ; yet one word might save them, one sound and vigorous health-giving letter from a medical man, habituated to the treat- ment and continuous supervision of such cases, would, in 'most iusta'nces, succeed in warding off the impending doom of a miserable and gloomy future, ami by appropriate treatment restore the enervated system to its natural vigor, and ensure a joyous and happy life. Dr. L. L. SMITH, of Melbourne, has made the .diseases of.youtb, and those arising there- from; 'his peculiar study. His whole profes- sional life has been especially devoted to the tieatment of Nervous Affections, and the diseases incidental to Married Life. His skill is available to all —no matter how many hundreds or thousands r of miles distant. His system of correspondence by letter' is now so well organised and known that comment would be superfluous— (by this means many thousands of patients have been cured, whom he has never seen and never known) ; and it has been carried on with such judicious supervision that though he has been practising thie branch of his profession for twenty^*- years in .these colonies, no single instance) of accidental discovery has ever yet happened. 