Neglect of proper ventilation leads to incomparable mischief. There are many persons who live through the day in closely confined and excessively heated apartments, and also sleep in small contracted bed rooms, without the least opportunity for a current of fresh air. Who can wonder that they rise in the morning with wearied limbs, languid and listless, with a furred tongue, parched mouth, and headache? They are continually subjected to inhaling, over and over, the poison, the miasma, of their own bodies, which cannot but result, in the end, to the great detriment of health. We are perfectly astonished, oftentimes, to see to what an extent such a thing is carried. Take this, in connection with eating improper and badly-cooked food, fat meats, gravies, and pastries, the want of suitable protection against atmospheric changes, and active exercise in the open air, and who can marvel at the prevalence of deadly fevers, consumption, or cholera even? It is only a matter of surprise that there are not ten deaths where there is now one. Look at the quality of the meats purchased for use. It is now a common practice with farmers (in order to save the milk) to sell their calves for market as soon as born; and people eagerly purchase this immatured meat because afforded at a low price. Then look at the enormous quantities of _pork_ consumed. Go past the sausage factories, in the cities of Jersey, and you behold it heaped in piles, ready for the work of the hundreds of "choppers," driven by steam. Then look into the groceries, see the array of pound sausage meat, and cheese heads, so called. A grocer in Newark city informed us, last winter, that sausage meat and buckwheat cakes formed three quarters of the aliment of the citizens. And in Paterson, New Jersey, in the hottest of the season, calves were lying upon the pavements, ready to be slaughtered, and almost as momentarily devoured, as occasion demanded. Even the poor fowls, their legs swollen with inflammation from the cords with which they were bound, and half famished for water and food, and fevered by fright and exposure, were readily purchased by men and women, to satisfy the cravings of a perverted appetite. When we behold such practices, we cannot think it strange that mortality should be so rife as it is at times, especially when the atmosphere is in a condition to affect the body in a predisposed state, favorable to the development of diseases, such as that of small-pox, cholera, fever and ague, scarlet and typhoid, (i.e., decomposing fever,) which is the concentration of all others. The food we eat may convey the disease within, and unless the state of our system is healthy and harmonious, the resisting power will not be equal to the force and action of the external elements, and consequently we shall become a prey to the contagion, whatever type or form it assumes. We are somewhat inclined to think that A. J. Davis (who is a physician by profession) is correct, when he says, "The