Mat 14, 1909] 



SCIENCE 



793 



spring of parents witli hair of a given color, 

 the authors concluding that heredity in hair 

 color is alternative, and that the fcaown facts 

 fit Mendel's law rather than Galton's. G. H. 

 Parker discusses "A Mechanism for Organic 

 Correlation," showing the influence of the 

 secretions of various glands in bringing about 

 marked changes in certain portions of the 

 body — these secretions are termed " hormones," 

 and in some instances are absolutely essential 

 to life. Under " Recent Advances in the 

 Study of Vascular Anatomy," John M. Coulter 

 deals with " Vascular Anatomy and the Ee- 

 productive Structures." Raymond Pearl pre- 

 sents " A Note on the Degree of Accuracy of 

 the Biometric Constants " and O. P. Cook a 

 communication on " Pure Strains as Artifacts 

 of Breeding." 



Bird-Lore for March-April has the follow- 

 ing articles : " Chickadee All the Tear Round," 

 by Mary C. Dickerson ; " A Second Season of 

 Bluebird Tenants," by Marian E. Hubbard; 

 «A Special Bird Blind," by E. J. Sawyer; 

 " Eggs of a Flicker found in a Strange Place " 

 (on the ground), by William Brewster ; "Where 

 Does the Male Homed Lark stay at Night ? " 

 by R. W. Hagner, and the first paper on " The 

 Migration of Vireos," by W. W. Cook. There 

 is a striking illustration of a drumming ruffed 

 grouse, photographed from life by C. P. 

 Hodge. 



In The American Museum Journal for 

 April Charles W. Mead gives some interesting 

 notes of the Andaman Islanders and their 

 customs under " A Collection from the An- 

 daman Islands." W. D. Matthew tells of 

 "The Oldest Land Reptiles of North Amer- 

 ica" and there is a note, with an illustration 

 of a fine " Group of Peculiar MoUusks," 

 Vermicularia nigricans. 



The Bulletin of the Charleston Museum for 

 March notes " The Needs of the Museum " 

 in the way of money for the purchase of cases 

 and installation of specimens. The city of 

 Charleston is doing aU it possibly can and 

 private individuals must do the rest. In the 

 south, where so large a proportion of the popu- 

 lation is negroes, the number of actual tax- 

 payers is vastly less than the number of in- 



habitants and this is the case in Charleston. 

 The second part of the "Local Fauna" com- 

 pletes the list of birds, 216 species, observed 

 in the vicinity of Charleston. 



The Johns Hophins University Circular for 

 January contains the addresses given at the 

 memorial meeting in honor of Dr. W. K. 

 Brooks and also the charming " Biographical 

 Sketch" by E. A. Andrews, reprinted from 

 Science. It also contains the addresses com- 

 memorative of Dr. Gilman. 



THE EPIDERMIS OF AN IGVANODONT 

 DINOSAUR 



We owe to Charles H. Sternberg and his 

 son George F. Sternberg the welcome discov- 

 ery of the epidermal markings of an Upper 

 Cretaceous Iguanodont. The discovery was 

 made August, 1908, in the region of Converse 

 County, Wyo., made famous by the explora- 

 tions of Hatcher for remains of Ceratopsia. 

 This Triceratops Zone, originally designated 

 as the Ceratops Zone, is divided, like that of 

 the Hell Creek Basin in Montana, into suc- 

 cessive layers of sandstones and clays. The 

 present specimen' was found near the summit 

 of the basal sandstones, and is provisionally 

 identified by Mr. Bamum Brown who is ma- 

 king a special study of these dinosaurs, as 

 belonging to the species Trachodon annectens 

 Marsh. 



As found, the entire animal lay in a normal 

 position on its back and completely encased in 

 the impression of itS' epidermal covering as far 

 back as the posterior portion of the pelvis and 

 extremities of the hind limbs, which had been 

 cut off and removed by erosion. The left fore 

 limb was outstretched at right angles to the 

 body, while the right fore limb lay stretched 

 over the under surface of the head. The 

 manus is completely encased in the integ- 

 ument, and was thus web-footed^ — adding 

 another analogy to the Anatidse. The 

 head was sharply bent around to the right 

 side (the left side as seen from above). The 

 scapulse were closely pressed to the sides and 

 probably in normal position, as well as the 



^ This unique specimen has been added to the 

 Jesup collection of reptiles and amphibians, 

 through the liberality of Mrs. Morris K. Jesup. 



