1. De oleo distillato formicorum æthereo. 2. De albumine ovi succino simili. In the Miscellania Berolinensia. 1. Meditationes in binas observationes de aqua per putrefactionem rubra, vulgo pro tali in sanguinem versa habita. 2. Succincta relatio exactis Pomeraniis de prodigio sanguinis in palude viso. 3. De prodigio sanguinis ex Pomeranio nunciato. 4. Disquisitio de camphora. 5. De experimento probandi spiritum vini Gallicum. 6. De spiritu urinoso caustico. 7. Demonstratio syrupum violarum ad probanda liquida non sufficere. 8. Examen correctionis olei raparum. 9. De vi caustica et conversione salium alkalino-fixorum aëri expositorum in salia neutra. He published separately, 1. De salibus alkalino-fixis et camphora. 2. De succino, opio, caryophyllis aromaticis et castoreo. 3. On saltpetre, sulphur, antimony, and iron. 4. On tea, coffee, beer, and wine. 5. Disquisitio de ambragrysea. 6. On common salt, tartar, sal ammoniac and ants. After Neumann’s death, two copies of his chemical lectures were published. The first consisting of notes taken by one of his pupils, intermixed with incoherent compilations from other authors, was printed at Berlin in 1740. The other was printed by the booksellers of the Orphan Hospital of Zullichau (the place of Neumann’s birth), and is said to have been taken from the original papers in the author’s handwriting. Of this last an excellent translation, with many additions and corrections, was published by Dr. Lewis, in London, in the year 1759; it was entitled, “The Chemical Works of Caspar Neumann, M.D., Professor of Chemistry at Berlin, F.R.S., &c. Abridged and methodized; with large additions, containing the later discoveries and improvements made in Chemistry, and the arts depending thereon. By William Lewis, M.B., F.R.S. London, 1759.” This is an excellent book, and contains many things that still retain their value, notwithstanding the improvements which have been made since in every department of chemistry.