13. _Sage_: This is an herb of a more hot nature; and in fevers should be used with caution, unless where a transpiration is required. It promotes urine and perspiration, in many cases it may be used with the balm, and then makes a very good tea, both for the sick as well as those in health.
14. _Sassafras_: This is one of the warming and balsamic woods, which, if it is mixed with _lignum vitæ chips_, makes an excellent decoction for all rheumatic complaints, and where the blood wants to be diluted or purified.
15. _Oatmeal_: This article cannot strictly be deemed a medicine, yet, as water gruel is frequently wanted, that of oatmeal I think the best; besides, it is excellent for making poultices, being of a softening and rich quality. But if it should be wanting, _pounded biscuit_ will answer the purposes. In regard to diet, I shall say more in its proper place.
16. _cinamon_: This is a necessary article at sea, as it is of a gentle astringent nature, together being very warming, and is undoubtedly the best of all the spices, where the bowels are weak. Its peculiar uses I shall speak more of hereafter, when I come to treat on loosenesses and fluxes, and such diseases where it is useful.
17. _Allum_: This astringent medicine is very useful for gargles, for scurvy gums, and various other uses. Burned allum (which may be done by exposing a piece on a fire shovel over the fire till it is bubbled up and become of a white cake) is an excellent medicine, for gently checking proud flesh in ulcers; besides which, it makes an excellent tooth powder.
18. _Chalk_, is as necessary an article as any medicine, and so useful is it in long voyages, that a ship should be well stored with it; for it is not only an excellent absorbent, and will stop fluxes, when made use of in decoctions for that purpose, but, makes also a great purifier of water, and thereby contributes greatly to the preservation of health; as I shall hereafter further take under a stricter consideration.
19. _Salts_: Glauber’s purging salts, is a medicine which has had many virtues ascribed to it; as a cooling purge it is very well, but further I cannot recommend it: An ounce, or an ounce and an half is the dose; and it will be best to dissolve it in a tea cup of water over night, so that it may be taken early in the morning, and worked off with drinking gradually some tea after every motion.