A choice manual: or, rare and select secrets in physick and chirurgery Collected and practised by the Right Honourable the Countess of Kent, Lately Deceased. Whereto are added, Several Experiments of the Virtues of Gascon-Powder, and Lapis Contra Yarvam; by a Professor of Physick. As also most exquisite Ways of Preserving, Conserving, Candying, &c