Errata

CONTENTS. XIX. On a Periscopic Camera Obscura and Microscope. By William Hyde Wollaston, M.D. Sec. R.S. p. 370 XX. Further Experiments and Observations on the influence of the Brain on the generation of Animal Heat. By B.C. Brodie, Esq. F.R.S. Communicated to the Society for promoting the knowledge of Animal Chemistry, and by them to the Royal Society. p. 378 XXI. On the different Structures and Situations of the Solvent Glands in the digestive Organs of Birds, according to the nature of their Food and particular Modes of Life. By Everard Home, Esq. F.R.S. p. 394 XXII. On some Combinations of Phosphorus and Sulphur, and on some other Subjects of Chemical Inquiry. By Sir Humphry Davy, Knt. Sec. R.S. p. 405 Presents received by the Royal Society, from November 1811 to June 1812. p. 417 Index. p. 421 ERRATA. Of the figures intended to illustrate Mr. Playfair's paper in the last volume of the Transactions, Fig. 3 is named by mistake Fig. 1. Fig. 1 was omitted by accident, and is to be found at the end of this Part of the Transactions. Philosophical Transactions, 1811, page 230, line 13, for $8^h\ 35'\ 45''$ read $8^h\ 2'\ 5''$. Page 151 of this volume of the Transactions, line 20, for half read double.