# Errata

**Author(s):** Anonymous  
**Year:** 1869  
**Journal:** Philosophical Transactions of the Royal Society of London  
**Volume:** 159  
**Pages:** 2 pages  
**Identifier:** jstor-108989  
**JSTOR URL:** <https://www.jstor.org/stable/108989>  

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XXIII. Researches into the Chemical Constitution of Narcotine, and of its Products of Decomposition.—Part III. By Augustus Matthiessen, F.R.S., Lecturer on Chemistry in St. Bartholomew's Hospital. . . . . . . . . . . . . . . . . . . . . . . . 661

XXIV. Researches into the Chemical Constitution of Narcotine, and of its Products of Decomposition.—Part IV. By Augustus Matthiessen, F.R.S., Lecturer on Chemistry in St. Bartholomew's Hospital, and C. R. A. Wright, B.Sc. Lond. 667

XXV. Researches on Vanadium.—Part II. By Henry E. Roscoe, B.A., Ph.D., F.R.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 679

XXVI. On Palaeocoryne, a Genus of Tubularine Hydrozoa from the Carboniferous Formation. By P. Martin Duncan, F.R.S., Sec. Geol. Soc., and H. M. Jenkins, F.G.S., Sec. Royal Agric. Soc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 693

XXVII. On Holtenia, a Genus of Vitreous Sponges. By Wyville Thomson, LL.D., F.R.S., Professor of Natural Science in Queen's College, Belfast . . . . 701

XXVIII. Description of Parkeria and Loftusia, two gigantic types of Arenaceous Foraminifera. By William B. Carpenter, M.D., V.P.R.S., and Henry B. Brady, F.L.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 721

XXIX. On the Structure and Development of the Skull of the Common Fowl (Gallus domesticus). By William Kitchen Parker, F.R.S. . . . . . . . . . . . . . . . . . . . . 755

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 809

APPENDIX.

Presents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [ 1 ]

ERRATA.

Page 134, last line of Note, insert + before 2φ.
Page 158, in 5th column of Table, the number in line b. should be 24, and in line c. should be 5.
Page 575, line 9, for 1826 read 1845.