Let us stop and reason. Might this effect (itching) not come from obstructed gases that flow through and from the skin? If gas should be detained in the system by the excretory ducts the substance closing the porous system would cause irritation of nerves, and increase the heart's action to such degree that the temperature is raised to fever heat, by the velocity with which electricity is brought into action. Electricity being the force that is naturally required to contract muscles and force gases from the body. Let us advance higher in the scale of foreign bodies until we arrive to the condition of steam, which is more dense than gas. Would it not take more force to discharge it? By the same rule of reasoning we find water to be much thicker as an element than either gas or steam. Then we have lymph as another element, albumen, fibrin, with all the elements found in arterial and venous blood, all of which forces required to circulate, pass through and out of the system, must be increased to suit. Therefore we are brought to this conclusion, that the different degrees of temperature do mark the density of the fluids with which the motor engine has to contend. If gas produces an itching sensation, would it not be reasonable to suppose that the consistence of lymph would cause elevations on the skin, such as nettle-rash. If this method of reasoning sustains us thus far, why not argue that albumen obstructed while in the system of the fascia would require a much greater force to put it through the skin. The excretions of the body would cause a much greater heat to even throw the albumen as far as the cuticle. If a greater, with a greater velocity, why not grant to this as cause of the disturbance of motor energy equal to measles. Let us add to this albumen a quantity of fibrin, have we not cause to expect the energy hereby required to be equal to that nerve and blood energy found in smallpox? If this be true, have we not a foundation in truth on which to base our conclusions? That the difference in forces manifested is the resistance offered by the difference in the consistence of devitalized fluids which the nerves and fibers of the fascia labor to excrete. NATURE CONSTRUCTS TO SUIT A WISE PURPOSE. By close observation the philosopher who is hunting to acquaint himself with the laws of cause and effect, finds upon his voyages as an explorer, that nature as cause does construct for wise purposes; and shows as much wisdom in the construction and preparation of all bodies, beings and worlds, as the workings of those beings show when in action. As life, the highest known principle sent forth by nature to vivify, construct and govern all beings, it is expected to be the indweller and operator, and one of the greatest perceivable and universal laws of nature. And when it becomes necessary to break the friendly relation between life and matter, nature closes up the channels of supply.