make it especially convenient for the traveller who reads as he goes. The author writes clear and direct English, and correct classical orthography. His systematic of the Mammalia given on p. 11 is uncritical, though it includes most of the groups brought to light by paleontology. More detailed classification in later chapters elucidates the subject further.

The accompanying three illustrations give a good idea of their their general character.-E. D. COPE.

AMERICAN NATURALIST LIST OF RECENT BOOKS AND PAMPHLETS.

BAUR, G.-The Stegocephali Aus d. Anat. Anz., XI Bd., 1896. From the author.

BESSEY, C. E.-The Essentials of Botany. New York, 1896. Holt and Co., Pub.

From Henry

Biographical Sketch of Dr. Robert W. Shufeldt. Extr. from Physicians and Surgeons of America.

CHESTER, A. H.-A Dictionary of the Names of Minerals including their History and Nomenclature. New York, 1896. From John Wiley and Sons, Pub. JORGENSEN, A.-Ueber den Ursprung der Alkoholhefen. Kopenhagen, 1895. From the author.

DABNEY, C. W.-Vivisection in the District of Columbia. Washington, 1896. From the Dept. Agric.

DALI, W. H.-Diagnoses of New Tertiary Fossils from the Southern States. -Diagnoses of New Mollusks from the Survey of the Mexican Boundary. Extrs. Proceeds. U. S. Natl. Mus., Vol. XVIII, 1895. From the Museum.

-Defence of Vivisection. Resolution Adopted by the American Medical Association, May 6, 1896.

DEPERET, M.-Sur l'Age de la Terrasse quaternaire de Villefranche. Extr. du C. R. des séances Soc. Geol. de France, Paris 1895. From the author. DEXTER, F.-A Contribution to the Morphology of the Medulla oblongata of the Rabbit. Reprint Achiv, für Anat. u. Physiol. Anat. Abth. Boston, 1896. From the author.

DUMERIL, A. ET F. BOCOURT.-Etudes Sur les Reptiles et les Batraciens, Troisième Partie. Recherches Zoologiques, Miss. Scientif. au Mexique, etc. Mexico, 1895. From M. Bocurt.

EARLE, C.-Notes on the Fossil Mammalia of Europe. Extr. Amer. Nat. Phila., 1896. From the author.

FAIRCHILD, H. L.-Glacial Genesee Lakes. Extr. Bull. Geol. Soc. Amer., Vol. 7, 1896.

-Proceeds. of the Eighth Annual Meeting, 1895. Extr. Bull. Geol. Soc. Amer., April, 1896.

held at Philadelphia, Dec., From the Society.

FOWLER, C. N.-Speech on the Free Coinage of Silver at the Ratio of 16 to 1. Washington, 1896. From the author.

GARMAN, S.-The Cyprinodonts. Extr. Mus. Comp. Zool. Harvard College, Cambridge, 1895. From the author.

GATSCHET, A. S―The Whippoorwill as named in American Languages. Extr. Amer. Antiquarian and Oriental Journ., Jan., 1896. From the author.

GULLIVER, P. F.-Cuspate Forelands. Extr. Bull. Geol. Soc. Amer, Vol. 7, 1896. From the Society.

GEROULD, J. H.-The Anatomy and Histology of Caudina arenata Gould. Extr. Proceeds. Boston Society Nat. Hist., 1896. From the Society.

HASSALL, A.-Check List of the Animal Parasites of Chickens. Cir. No 9, U. S. Dept. Agric. Bur. Animal Industry. Washington, 1896. From the Dept. HOBBS, W. H.-Die krystallisirten Mineralien aus dem "Galena Limestone" des südlichen Wisconsin und des nördlichen Illinois. Aus Zeitschrift für Krystallographie, etc., XXV. Leipzig, 1895.

-A Summary of Progress in Mineralogy in 1895.

From Monthly Notes in

the AMERICAN NATURALIST. Madison, 1896. From the author. LAWSON, A. C.-On Malignite, a Family of Basic Plutonic Orthoclase Rocks, rich in Alkalies and Lime, intrusive in the Coutchiching Schists of Poohbah Lake. Extr. Bull. Dept. Geol. Univ. Calif. Berkeley, 1896. From the author. LEFFINGWELL, A.-Does Science need Secrecy? A Reply to Prof. Porter and Others. Reprint from the Boston Transcript. Providence, R. I., 1896. From the author.

LEIDY, J.-Fossil Vertebrates from the Alachua Clays of Florida. Edited by F. A. Lucas. Extr. Trans. Wagner Free Inst. Science, Phila., Vol. IV, 1896. From the Editor.

LINELL, M. L.-Description of a New Species of Golden Beetle from Costa Rica. Extr. Proceeds. U. S. Natl. Mus., Vol. XVIII, 1896.

LUCAS, F. A.-The Taxonomic Value of the Tongue in Birds. Extr. from The Auk, Vol. XIII, 1896.

MEEK, S. E.-A List of Fishes and Mollusks collected in Arkansas and Indian Territory in 1894. Extr. Bull. U. S. Fish Commission for 1895. Washington, 1896. From the U. S. Fish Commission.

MERRIAM, J. C.-Sigmogomphius lecontei, a New Castoroid Rodent from the Pliocene, near Berkeley, Cal. Extr. Bull. Dept. Geol. Univ. Calif. Berkeley, 1896. From the author.

MERRIAM, C. H.-Revision of the Lemmings of the Genus Synaptomys, with descriptions of New Species.

Preliminary Synopsis of the American Bears. Extrs. Proceeds. Biol. Soc. Washington, 1896. From the author.

MOCQUARD, M. F.-Note sur quelques Reptiles du Cap Blanc. Extr. Bull. Mus. d'hist. nat. Paris, 1895.

-Sur les Reptiles recueillis à Madagascar de 1867 à 1885 par M. Grandidier. Extr. Bull Soc. Philom. Paris, 1895.

-Sur une Collection de Reptiles recueillis à Madagascarar M. M. Alluand et Belly, 1. c. Paris, 1895. From the author.

Annual Report of the Yorkshire Society for 1895. York, 1896. From the Society.

MOORE, C. B.-Certain Sand Mounds of Duval Co., Florida.-Two Mounds on Murphy Island, Florida.

Florida.

From Advance

From the

Phila., 1895.

-Certain Sand Mounds of the Ocklawaha River, Sheets of the Journ. Acad. Nat. Sci., Phila., Vol. X. author. NORRIS, W. F.-The Terminal Loops of the Cones and Rods of the Human Retina with Photomicrographs. Reprint from Amer. Ophathalmol. Soc., Trans. 1895.

Bull. No. 8, U. S.

ORDONNEZ, E.-Las Rocas eruptivas del suroeste de la Cuenca de Mexico. Extr. Bol. Inst. Geol. de Mexico., Mun. 2. Mexico, 1895. Erom the Inst. PALMER, T. S.-The Jack Rabbits of the United States. Dept. Agric. Div. Ornith. and Mammalology. Washington, 1896. PARKER, E. W.-Asbestos and Soapstone in 1892. Abstract from Mineral Resources of the United States, calendar year, 1892. Washington, 1893. From the U. S. Geol. Survey.

-The Production of Salt.

Extr. Sixteenth Ann. Rept. U. S. Geol. Surv. 1894-95, Pt. IV. Mineral Resources of the U. S. Washington, 1895. From the U. S. Geol. Surv.

PEALE, A. C.-The Production of Mineral Waters. Extr. Sixteenth Ann. Rept. U. S. Geol. Surv., 1894-95, Pt. IV. Washington, 1895. From the U. S. Geol. Surv.

PIETTE, ED.-Hiatus and Lacune Vestiges de la Période de Transition dans la Grotte du Mas-d'Azil. Extr. Bull. Soc. d'Anthropol. Paris, 1895 From the the author.

Report of the American Humane Assoc. on Vivisection in America adopted at Minneapolis, Minn., Sept. 26, 1895. Chicago, 1896.

Report of the Meeting held for the Presentation to Professor Bonney of his Portrait, presented by his former pupils. London, 1895.

RIDGWAY, R.--Description of a New Subspecies of the Genus Peucedromus, Cones. Extr. Proceeds. U. S. Natl. Mus. From the Museum.

SHALER, N. S.-Peat Deposits. Extr. Sixteenth Ann. Rept. U. S. Geol. Surv., 1894-95. Pt. IV. Mineral Resources of the United States. Washington, 1895. From the U. S. Geol. Surv.

SIMPSON, C. P.-Description of Four New Triassic Unios from the Staked Plains of Texas Extr. Proceeds. U. S. Natl. Mus., Vol. XVIII, 1895.

the Museum.

From

SUMNER, F. B.-The Varietal Tree of a Philippine Pulmonate. Reprint from Trans. N. Y. Acad. Sciences, Vol. XV, 1896. From the author.

SWANK, J. M.--Iron and Steel and Allied Industries. Extr. Sixteenth Ann. Rept. U. S, Geol. Surv., 1894–95, Pt. III. Washington, 1895. From the U. S. Geol. Surv.

WILLISTON, S. W.-On the Skull of Ornithostoma. Quarterly, Vol. IV, 1896. From the author.

Extr. Kansas University

General Notes.

PETROGRAPHY.'

The Sioux Quartzite of Iowa.-The Sioux quartzite has long been known as the oldest sedimentary rock in Iowa. It has recently been studied by Beyer. It is a white or red vitreous rock with which is associated as its upper extension a series of mottled reddish or purplish-black slates. The quartzites present the usual aspects of indurated sandstones. The constituent quartz grains are rich in 'quartz

are arenaceous.

needles' which can be traced directly into rutile spicules. The slates They exhibit no traces of slaty cleavage, though in some cases their quartz grains and micaceous constituents are distorted in such a way as to testify to a horizontal movement in the rock mass containing them. All the slates are mottled by spheroidal masses of a lighter color than the body of the rock. These masses are spheroidal with the longer dimensions of the spheroids in the bedding planes of the shale. Their lighter color is supposed to be due to the removal of iron from those portions of the rock they occupy. Associated with the quartzites is a great mass of olivine diabase consisting of a coarse grained aggregate of labradorite and oligoclase zonally intergrown, olivine, augite, biotite, hornblende, apatite and magnetite. Most specimens are much altered, the components having been changed into the usual secondary substances common to diabase. In structure the rock varies from the ophitic, in which the plagioclase is older than the augite, to the gabbroitic, in which the augite is the older mineral. An analysis gave:

Total

SiO, TIO, Fe,O, FeO Al2O, CaO MgO K,O Na2O H2O PO 42.85 tr 13.66 20.23 6.85 3.42 1.90 5.78 .88 tr = = 100.57

The Peridotites of North Carolina.-In connection with a discussion of the occurrence and origin of corundum in North Carolina, Lewis gives us an interesting account of the basic rocks associated with the gneisses in that portion of the Appalachian belt included with in the limits of the State. These basic rocks, consisting mainly of

1 Edited by Dr. W. S. Bayley, Colby University, Waterville, Me.

2 Iowa Geol. Survey, Vol. VI, p. 69.

3 Bull. No. 11, North Carolina Geol. Survey, 1896.