784 The American Naturalist. [September, 
RECENT BOOKS AND PAMPHLETS. 
Bateson, W.—Materials for the Study of Variation, treated with special — 
regard to the discontinuity in the origin of species. London and New York, 
1894. From Macmillan and Co. Publishers 
Biological vci delivered at the Menos Biol. Lab. Wood's Holl, 1893. 
From the Laboratory. 
Bulletin Cornell Univ. Agric. Exp. Station, No. 58, 1893. 
Bulletin Wyoming Experiment Station. No. 14, 1893. 
CALVERT, P. P.—Catalogue of the Odonata (Dragon-flies) in the vicinity of 
ot dies an Introduction to the Study of this Group of Insects. Extr. 
m. Soc., Vol. 20, 1893. From the author. 
CAMPBEL CE beating in the Nervous Organization of Man and Woman. 
London, VeL From H. K. Lewis, Publisher. 
Cross, W.—Intrusive apre Dykes in Granite. Extr. Bull. Geol. Soc. 
Am., Va. V,1894. From the Society. 
Fepororr, E.—Nouvelle merca pour l'étude goniométrique et optique des 
cristaux appliquie à la mineralogie et à la Erie dt Mém. du Comite Géol., 
Vol. X, 1893. From the Geol. Surv. of Russ 
FriNT, W.—Statistics of Public Libraries in cde United States and Canada. 
Bureau of Ed., Cir. Inform., No. 7, 1893. From the Bureau of Education. 
Gace, S. P.—The Brain of Diemyctylus viridescens from Larval to Adult Life, 
and comparisons with the Brain of Amia and Petromyzon. Extr. Wilder 
Quarter-Century Book, 1893. From the author. 
HAECKEL, E.—Metagenesis und Hypogenesis von Aurelia aurita. Ein Beit- 
rag zur Entwickelungsgeschichte und zur Teratologie der Medusen. Jena, 1881. 
——Zur Phylogenie der Australischen Fauna. Abdruck aus Semon, Zoolo- 
gische Forschungsreisen in Australien und dem malayischen Archipel. Jena, 
HARSHBERGER, J.—Maize. A Botanical and Economic Study. Contr. Bot. 
Lab. Penn. Univ., 1893. From the author. 
Howes, G. B.—Notes on the Variation and Development of the Vertebral and 
Limb-skeleton of in Amphibia.—— Notes on the Abnormal Sternium of Hapale 
jacchus oceeds. London Zool. Soc., 1893..—On the Mammalian Pel- 
vis with pilil ilaia to the young of Ornithorh; cade anatinus. Extr. 
Journ. Anat. and Physiol., Vol. XXVII, 1893. From the a 
LANE, A. C.—Geologic Activity of the Earth's Ado Dei Gases. 
Extr. Bull. Geol. Soc. Am., Vol. V, 1894 
Lawson, A. C.—The Aietes of the Minnesota Coast of Lake Superior. 
— The Laccolite Sills of the Northwest Coast of Lake Superior, with a Prep- 
atory Note on the Norian of the Northwest. Bull. No. 6, 1893. Minn. Geol. 
and Nat. Hist. Surv. From the Survey. 
LINTNER, J, A.—Fourth and Fifth Reports on the Injurious and other Insects 
of the State of New York. Extr. 41st Rept. New York State Mus. Nat. Hist. 
From the author. 
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