8. All official mixtures may be given in doses of from 1 to 4 drams (4-15 c.c.).
9. All spirits may be given in doses up to 1 dram (4 c.c.), except the spirit of nitroglycerin (glonoin), the dose of which is from 1 to 5 minims (0.06-0.3 c.c.), the spirit of phosphorus, the dose of which is from 5 to 15 minims (0.3-1 c.c.), and the spirit of bitter almond, the dose of which is from 5 to 10 minims (0.3-0.6 c.c.).
10. All waters (aquæ) may be given in doses up to 1 ounce (30 c.c.), except aqua ammoniæ, aqua chlori, and aqua laurocerasi (cherry-laurel), the dose of which is about ½ dram (2 c.c.).
11. Volatile or essential oils may be given in doses up to 5 minims (0.3 c.c.) or more, except the oil of bitter almond, the dose of which is from ¼ to ½ minim (0.015-0.03 c.c.).
TO ASCERTAIN DOSES OF MEDICINE
FOR CHILDREN.
The following rule of Young is sufficiently accurate for most drugs: Add 12 to the age and divide by the age to get the denominator of the fraction, the numerator of which is 1. Thus, for a child of two years,
| 2 + 12 | = 7, and the dose is ⅐ of that for an adult. |
| 2 |
For children up to twelve months of age, Young’s rule may be worked out as follows: Add 144 to the age in months, which sum becomes the denominator of the fraction, the numerator of which is the child’s age. Thus, for a baby of eight months,
| 8 | = | 8 | , or ¹/₁₉ of an adult’s dose; |
| 8 + 144 | 152 |
for a baby of six months,