[Illustration: _Nitts_ _one day Old_ _3 days_ _1 week_ _2 weeks_ _3 weeks_ _4 weeks_ _5 weeks_ _6 weeks_ _7 weeks_ _8 weeks_ _9 weeks_ _10 weeks_ _full grown Europeans_ _full grown American_ _G. VanderGucht sculp._ ] A TREATISE OF BUGGS: SHEWING When and How they were first brought into _England_. How they are brought into and infect Houses. Their Nature, several Foods, Times and Manner of Spawning and Propagating in this Climate. Their great INCREASE accounted for, by Proof of the Numbers each Pair produce in a Season. REASONS given why all Attempts hitherto made for their Destruction have proved ineffectual. VULGAR ERRORS concerning them refuted. That from _September_ to _March_ is the best Season for their total Destruction, demonstrated by Reason, and proved by Facts. Concluding with DIRECTIONS for such as have them not already, how to avoid them; and for those that have them, how to destroy them. By _JOHN SOUTHALL_, Maker of the Nonpareil Liquor for destroying _Buggs_ and _Nits_, living at the _Green Posts_ in the _Green Walk_ near _Faulcon-stairs, Southwark_. The SECOND EDITION. _LONDON_: Printed for J. ROBERTS, near the _Oxford-Arms_ in _Warwick-Lane_. M.DCC.XXX. (Price One Shilling.) [Illustration] TO Sir HANS SLOANE, Bart. First Physician in Ordinary to His MAJESTY; President of the ROYAL SOCIETY, and also of the College of Physicians. _SIR_, Your ready Condescension to peruse the following Treatise, and to see the Experiments of my Liquor, both in regard to its bringing out, and destroying Buggs; as also that of its no ways staining Furniture; was to me the happy Presage of your Favour, and Approbation of my Performances. The Satisfaction of having this Treatise and Experiments approv’d by You, the Best of Judges, was to me the greatest Honour I could wish for; but the additional one, confer’d by your introducing me to the _Royal Society_, and there having not only their unanimous Approbation, but yours and their Thanks for my Discoveries and Intent of publishing them, was beyond my Hopes, and a Pleasure so great, as to be past expressing; in regard that it dissipates all my Fears for its Success, and makes me justly hope it will meet with a candid Reception from, and be of general Benefit to the Publick. As to your Goodness, I must ascribe the happy Prospect of its proving so, Gratitude obliges me in this manner to acknowledge it; and to be, _Sir_, _Your Much-Obliged_, _And Most Obedient Servant_, JOHN SOUTHALL. [Illustration] THE PREFACE.