This disease--milk fever, or dropping after calving--rarely occurs until the animal has attained mature age. The first symptoms make their appearance in from one to five or six days after parturition. It appears to be a total suspension of nervous function, independent of inflammatory action, which is suddenly developed, and, in favorable cases, as suddenly disappears. It is called dropping after calving, from its following the parturient state. _Symptoms._--Tremor of hind legs; a staggering gait, which soon terminates in loss of power in the hind limbs; pulse rises to sixty or eighty per minute; milk diminishing in quantity as the disease progresses; the animal soon goes down, and is unable to rise, moans piteously; eyes set in the head; general stupor; and slow respiration. _Treatment._--This disease, though generally regarded as a febrile disorder, will not yield to the general practice of taking blood, as a large majority of the cases so treated die. The bowels must be opened, but the veins never. Give Epsom-salts, one pound; Jamaica ginger, two ounces; dissolve in warm water, one quart, and drench. The author usually gives with good effect, some five or six hours after the salts, two ounces of nitric ether and one ounce of tincture of opium, in half a pint of water. Rub well in, along the back and loins, the following: strong mustard, three ounces; aqua ammonia and water, each one and a half ounces. Some modifications in the treatment of this disease, as well as of most others, will be necessary under certain circumstances, which can only be determined by the veterinary practitioner. QUARTER EVIL. In some sections of the country, this disease--known by the other names of black quarter, and joint murrain--is quite common among young cattle, and is generally fatal in its termination. There is little or no warning of its approach. The first animals in a herd to be attacked are generally those in a full, plethoric condition. _Symptoms._--The joints suddenly become swollen, and so painful as to produce severe lameness, particularly in the hind parts. General irritative fever exists in the system, attended with great tenderness of the loins; the head is poked out; eyes red and bulging; the roots of the horns, as well as the breath, are hot; the muzzle dry, and nostrils expanded; pulse rises to seventy or eighty, full and hard; respiration is hurried; the animal is constantly moaning, and appears to be unconscious of surrounding objects; the swelling of the limbs extends to the shoulder and haunch; the animal totters, falls and dies in from twelve to twenty-four hours. _Treatment._--Early bleeding is requisite here, to be followed by active purgatives; after which, give one of the following powders every half hour: nitrate of potassa, two ounces; tartrate of antimony and pulverized digitalis, of each one and a half drachms; mix, and divide into eight powders. These should not be renewed. Cold linseed tea should be freely given. RABIES.