I carne upon this collection o Pds. lec tures in chemistry by Henric Theophil Scheffer delivered in about 1750, edited by Torbern Bergman and published in Swed ish in 1775, when I was spending a sab batical leave in Uppsala. Sweden. in 1977, gathering material for my biography o Pds. Bergman (Coronado Press, 1985). I have written a chapter about "Sche Pds. Pds. er's Lec tures" in my Bergman biography. I refer the reader to this biography for further discussion. Bergman says in his "Foreword" to "Sche Pds. Pds. er"s Lectures" that he designed this collection Pds. o~ use by "those like me who teach chemistry". So this is one o Pds. the first, i Pds. not the first, textbooks de signed to be used in classes in chemistry. That phrase. "one o Pds. the first. i Pds. not the Pds. irst". is so typical o Pds. Bergman's work in many fields. Bergman is considered to be the father o Pds. quantitative chemical analysis, physical chemistry, modern chem ical nomenclature, the concept o Pds. equival ent weights. and the electromotive series.

Inhalt
First Section: Concerning Salts.- I: Salts in General.- II: About Acids.- III: Alkaline Salts.- IV: Neutral Salts About Neutral Salts.- V: Middle Salts.- Second Section: Concerning Earths.- I: On the Nature of Earths.- II: Fusing Earths.- Third Section: Concerning Water.- I: Water by Itself.- II: Testing Water.- Fourth Section:Concerning Combustible Substances.- I: Sulfur.- II: Spiritus Vini.- III: Ether.- IV: Oils and Fats.- Fifth Section: Concerning Metals.- I: Noble Metals.- II: Ignoble Metals.- III: Semi-metals.- Sixth Section: Concerning Dyeing.- I: Red Dye.- II: Yellow Dye.- III: Blue Dye.- IV: Black Dye.- Additions by Torbern Bergman.