This species of fever is closely allied to the preceding variety in everything but the cause, which, instead of being exposure to cold, is some peculiar condition of the air, to which the name epidemic is given, in order to conceal our ignorance, for it is really only giving a name and nothing else. The term influenza is precisely similar, both only signifying the peculiar and general prevalence of the complaint, and not defining its nature or its cause. The latter term is, however, applied more especially to epidemic catarrh, which is the form we are now considering. As the symptoms are very closely similar to those of simple cold, or ephemeral fever, it is unnecessary to repeat them; nor is the treatment in the first stage at all different. But as the cough and running seldom disappear without some extra care and attention, it does not always do to trust to nature here for a cure. Lowering medicines and diet after the first few days are not at all successful; and, on the other hand, warm expectorants, with tolerably good and nourishing slops, will be found to answer the best. The expectorant bolus, No. 1, may be given night and morning with advantage.

As soon as the cough and running at the nose have somewhat subsided, and before exercise is allowed, the bark mixture (Tonic No. 2) may be given; and only when the strength and spirits are so recruited as to warrant the supposition that the health is greatly restored is the dog to be allowed exercise, and then only at first with great caution. It is often the case that a premature exposure to air and excitement brings on a relapse, and especially when the lungs are at all implicated either in their substance or mucous membrane: A human patient can be taken out in a carriage, but dogs, unless they are great pets, are seldom allowed that indulgence; and hence the necessity for the above precaution.