Child aged one month ¹/₁₄₅ of an adult’s dose. “ “ two months ¹/₇₃ “ “ “ “ “ three months ¹/₄₉ “ “ “ “ “ four months ¹/₃₇ “ “ “ “ “ five months ¹/₃₀ “ “ “ “ “ six months ¹/₂₅ “ “ “ “ “ seven months ¹/₂₂ “ “ “ “ “ eight months ¹/₁₉ “ “ “ “ “ nine months ¹/₁₇ “ “ “ “ “ ten months ¹/₁₅ “ “ “ “ “ eleven months ¹/₁₄ “ “ “ “ “ twelve months ¹/₁₃ “ “ “ “ “ two years ¹/₇ “ “ “ “ “ three years ¹/₅ “ “ “ “ “ four years ¹/₄ “ “ “ “ “ five years ⁵/₁₇ “ “ “ “ “ six years ¹/₃ “ “ “ “ “ seven years ⁷/₁₉ “ “ “ “ “ eight years ²/₃ “ “ “ “ “ nine years ³/₇ “ “ “ “ “ ten years ⁵/₁₁ “ “ “ “ “ eleven years ¹/₂ “ “ “ “ “ twelve years ¹/₂ “ “ “ Of powerful narcotics, such as opium, scarcely more than one-half of this proportion should be used. In the case of mild cathartics, however, two or even three times this proportion may be given. THE DOSE OF DRUGS ADMINISTERED SUBCUTANEOUSLY AND BY THE RECTUM. The dose of a drug given _hypodermically_ is usually about one-half the quantity given by the mouth, while _twice_ as large a dose is generally given by the _rectum_ as would be given by the mouth. PROPER TIME TO TAKE MEDICINES.