PETHOGKAPIIY. 349 



HovKY, E. O. A cordiorite gneiss from Couiiocticiil. Am. Jour, of Sci., July 1<S, 



1888, vol. XXXVI, p. 57. 

 Kcpoiis from the vicinity of Guilford, Connecticut, ii cordierite gneiss. This 



is the first to be reported in the United States. The rock consists essentially of 



<iuarlz, biotite, cordierite, and some plagioclase. 

 IfUHiJAKD, Lucius L. Beitriige /ur Kenntniss der Nosean-fiihrenden Auswiirflinge 



des Laacher Sees. Min. und pet. Mittheilungen, viii. Band, v. Heft, \}. ;{.j6. 

 Hi:(tHKS, T. JNIcKk.nny. On some brecciatcd rock in tlie Archa-an of Malvern. Gcol. 



Mag., November, 1HS7, p. .'iOl. 

 Hi'TTON, V. W. The eruption of Mount Tiinnvera. (^uar. Jour. Geol. Soc, Nt». 



170, May, 1-88, vol. xr.in, p. 178. 

 Gives an account of the eruption of June 10, 1886. The materials ejected are 



chissed a.s augite andesites and rhyolites. 

 On a hornblende biotite rock from Dusky Sound, New Zealand. Quar. Jour. 



Geol. Soc, No. 17(i, November, 1888, vol. XLiv, )). 74.'i. 

 llyLAXl), J. Shkarson. Ueber die Gesteine des Kilimandscharo und dessen Umgebung. 



Min. und pet. Mittheilungen, x. Band, iii. Heft, ]>. 203. 

 JoLV, J. On the occurrence of loiite in the Granite of County Dublin. Geol. Mag., 



November, 1888, p. .517. 

 JoxES, E. .7. Examination of Nodular Stones obtained by trawling off Colombo- 



Rec. Geol. Soc. of India, part 1st, l'-'88, vol. xxi, p. 3."). 

 JUDD, J. W. On the Volcanic Phenomena of the eruption [of Krakatoa] and on the 



Nature and Distribution of the ejected materials. The Eruption of Krakatoa 



and subsequent Phenomena. Report of the committee of the Royal Society, 



London. Trubner & Co., 1888. 

 Kratzer, F. Geologische Beschreibung der LTnigelmng von Ricau. Jahrbuch dek. k. 



geol. Reichs.mstalt, 1888, xxxviii, ;;rd, pp. :>r).V416. Two plates showing micro- 

 structure. 

 Kemp, J. F. Rosetown extension of the Cortlandt Series. Am, Jour. Sci., October, 



1888, vol. xxxvi, pp. •247-253. 



The Dikes of the Hudson River Highlands. Am. Nat., August, 1888, p. 091. 



Describes dikes of l>asic rocks somewhat resembling the Camptonite of New 



Hampshire. 



Kendall, Percy F. Preliminary notes on some occurrences of Tachylyte in Mull. 

 Geol. Mag., December, 1888, p. 5.55. 



Kinahan, (J. H. Arenaceous Rocks, Sands, Sandstones, Grits, Conglomerates, Quartz- 

 Rocks, and Qiiartzites. Sci. Proc. Roy. Dub. Soc., July, 1887, vol. v, pp. 507-618. 



Gives many interesting facts relative to the composition, occurrence, and eco- 

 nomic value of thest^ materials. 



Slates and Clays, with Introduction and Building notes by R. Clark. Sci. 



Proc. Roy. Dub. Soc, May, 1888, vol. vi, p. <5<). 



Thi^ paper is acontinnation of those previously given on Irish economic geology. 



On Irish Arenaceous Rocks. Supplementary note to paper given in Sci. Proc. 



Roy. Dub. Soc, vol. vi, p. .507, Treats of the roc-ks wholly from an economic 

 8tandi>oint. Sci. Proc Roy. Dub. Soc, February, 1888, vol. vi, pp. 6-13. 



Marbles and limestones. Sci. Proc. Roy. Dub. Soc, April, 1SS7, vol. v, pp. 



4s<»-4!K). Continued in January number, p. 372. 



Kl.spATiE, M. Die Glaucophangesteino der Fruskagora in KroaticMi. Jahrl). der k. 

 k. geol. Reich-sanstalt, 1887, xxxvii, Ist, j))). 3.5 — 4(). 



Klein, Carl. Optlsclio Untersuchung zweier Granatvorkonnnen vom Harz. Neues 

 Jalirb. Min. (Jeol.,etc., 1887., i. Band, zweitcs Heft, p. 200. 



Petrograidiischo llntersuchnng einer Sinte von Geateinen aus der Umgebung 



des Bcdsener Sees. Sitz. der kiln, nrens. Akjul. der Wiss. zu. Berlin, Feluuary, 1888, 

 V, 2iul, pp. •Jl-121 



'I'he rocks described are an olivine-bearing trachyte, from Torre AKinaaud San 

 Lorenzo; oliviue-bearing audesitic trachyte, from Sassara and Mont Allina; 



