A CKNO WLEDGMENTS. 86 7 



Henning, Ernst. 



— Agronomiskt-Vaxtfysiogwomiska Studier. 34 pp. 

 Lawson, Andrew C. 



— I. The Anorthosytes of the Minnesota Coast of Lake Superior. 24 pp., 

 7 pi. — Bull. No. 8, Geol. and Nat. Hist. Surv. of Minn.,* II. The Laccolitic Sills 

 of the Northwest Coast of Lake Superior. 24 pp., Illustrated. — Bull. No. 8, Geol. 

 and Nat. Hist. Surv. of Minn., with Prefatory Note on the Norian of the North- 

 west (by N. H. Winchell). 34 pp.— Bull. No. 8, Geol. and Nat. Hist. Surv. of Minn. 

 Lesquereux, Leo. 



— Recent Determinations of Fossil Plants from Kentucky, Louisiana, Oregon, 

 California, Alaska, Greenland, etc., with description of new species. H-38 pp., 

 12 pi.— Proc. U. S. Nat. Mus., 1888. 

 Lindgren, Waldemar. 



— Two Neocene Rivers of California. 258-298 pp. — Bull. Geol. Soc. Am., Vol. 

 IV, June, 1893. 

 Lowe, Dr. Ferdinand. 



— Uber Thalbildung. 136 pp. 



LUNDBOHM, HjALMAR. 



— Om Berggrunden i Vesternorrlands kusttrakter. 321-326 pp. 

 — Om Granitindustrien i Utlandet Sarskildt Storbritannien. 61 pp., 1 pi. 

 — Geschiebe aus der Umgegend von Konigsberg in Ostpreussen. 

 — Verzeichniss einer Sammlung Ost und Westpreussischer Geschiebe. 84-92 pp. 

 — Engelska Byggnadsmaterial och Byggnadssatt samt de senares tillamplighet 

 i sverige. 46 pp., 3 pi. 



— Apatitforekomster i Gellivare Malmberg och Kringliggande Trakt. 48 pp., 3 pi. 

 — Apatitforekomster i Norrbottens Malmberg. 38 pp. 

 Miller, S. A. 



— Description of New Species of Fossils. 9 pp., 4 pi. — Jour. Cin. Soc. Nat. 

 Hist., July, 1882. 

 Penfield, S. L. 



— On Pentlandite from Sudbury, Ontario. 493~497 pp. — Am. Jour. Sci., Vol. 

 XLV, June, 1893. 



— On Cookeite from Paris and Hebron, Maine. 393~399 pp. — Am. Jour. Sci., 

 Vol. XLV, May, 1893. 

 Phinney, Arthur John. 



— The Natural Gas Field of Indiana. 590-742 pp., 5 pi. — Extr. Eleventh An- 

 nual Report of the Director, 1889-1890. 

 Pilling, James Constantine. 



— Bibliography of the Athabascan Languages. 125 pp. — Bureau of Ethnology. 

 Pirsson, L. V. 



— Note on some Volcanic Rocks from Gough's Island, South Atlantic. 380- 

 384 pp. — Am. Jour. "Sci., Vol. XLV, May, 1893. 



— Datolite from Loughboro, Ontario. 101-102 pp. — Am. Jour: Sci., Vol. XLV, 

 Feb. 1893. 

 Pittier, H. 



— Annales del Instituto Fisico-Geographico v del Museo Nacional de Costa 

 Rica. Tome III. — 1890. 162 pp. 



