lenty of guides to the required knowledge, some of them of great delicacy and extreme accuracy. The trouble generally is that these guides are not made use of, as the cause of the disaster is not suspected. A physiologist is not consulted till too late, perhaps till the disorder in the machinery of life is beyond repair.
Diminishing energy and power, decreasing endurance, slowing circulation, lessening blood colour, falling temperature, altered blood pressure, enlarging heart and liver, are some of the most obvious signs with which the physician is brought into contact in such cases. But every one of these may, and very often does, pass unnoticed for quite a long time by those who have had no scientific training. The public are extremely ignorant on such matters because the natural sciences have been more neglected in this country in the last fifty years than anywhere else in Europe, and that is saying a good deal. Hence diet quacks and all those who trade on the ignorance and prejudices of the public