In comparing with these symptoms the following symptoms from Hering's American Provings, Part I., 3d Num., p. 294: "40, 41, muttering during sleep; muttering and delirium during sleep; 83, 84, he had lost all consciousness of the things around him; he sank into a state of insensibility; 140, 144, sense of weight and fulness in the fore part of the head; heaviness and fulness in the vertex; dull pain in the occiput, aggravated by shaking the head; pressure, fulness and heaviness in the occiput; 170, her whole brain feels tired, as if gone to sleep; tingling; she experiences the same sensation in both arms, especially in the left, and from the left knee down to the foot; 175, 176, sensation as if the head were too large; swelling of the head; 391, when biting the teeth together, swallowing; after gaping or at other times, a sort of gritting the teeth; only a single, involuntary jerk frequently repeated; 501, nausea and vomiting; 506, nausea, as if one would vomit, with fainting; 512, vomiting of the ingesta; 619, retention of stool; 640, retention of urine; 665, scanty and dark-colored urine; 980, 984, 985, trembling, convulsions, starting during sleep as if in affright; 1020, sudden weakness, compelling him to lie down; he lost all recollection; 1032, great desire for sleep, he felt extremely drowsy." If we compare these effects of Apis to the above-mentioned symptoms of hydrocephalus, we shall find the homœopathicity of Apis to this disease more than superficially indicated. If we consider, moreover, that the known effects of Apis show that it possesses the power of exciting inflammatory irritation and œdematous swellings, we are justified, by our law of similarity, in expecting curative results from the use of Apis in all such diseases.