For Cramp in the Stomach

Dissolve a tea-spoonful of table salt, in a tea-cup of warm water; if this does not stop the vomiting and cramp, repeat the dose; this is very useful in stopping the operation of an emetic, when it has continued too long. Flannel cloths dipped in hot spirits, and sprinkled with cayenne pepper, and applied to the stomach, sometimes relieves the pain; a mustard plaster is also of use.

Source: Domestic Cookery, Useful Receipts, and Hints to Young Housekeepers, Elizabeth E. Lea

Remedy for Sick Head-ache

A table-spoonful of table salt; dissolved in a pint of water, as warm as you can drink it; take at two doses, and drink freely of luke-warm water, until it causes vomiting; put a hot brick to the feet, and avoid the air, which will check the perspiration.

Source: Domestic Cookery, Useful Receipts, and Hints to Young Housekeepers, Elizabeth E. Lea

Hives (Nettle Rash)

For itching, rub into them common table salt, or bathe with equal parts vinegar and water.

Hives indicate stomach trouble. Give citrate of magnesia.

If hives persist, give 1/2 tsp. table salt in water or 1/4 tsp. cream of tartar in 1/4 glass of water three times a day for three days.

If hives still persist, consult doctor.

Source: The Mary Frances First Aid Book, Jane Eayre Fryer