(Explanation of Figures.)
E. B. Williamson.
Mr. John Russi during the past summer collected a newt, Diemyctelus viridescens, Raf., near Salem, Ohio, with a fifth foot growing from the dorsal surface of the left thigh, as shown in figure 1. The newt is a young one, 48 millimeters in length.
The left femur is slightly longer than the right, and is shown much enlarged at figure 2 in anterior view. Near its middle is a section of cartilege which allows of the femur being bent slightly in any direction. Tendons from the fifth foot pass to the femur at this point. Figure 3 shows a much enlarged drawing of the skeletal elements of the foot from dorsal view. The salamander was kept alive for some time but so far as was seen made no use of and exercised no control over its extra foot. I am indebted to Mr. Russi for the privilege of examining this interesting specimen which he has donated to the Salem High School Museum.
THE SUMMER’S WORK AT SANDUSKY.
The work at the Lake Laboratory at Sandusky the past summer was very encouraging and indicates a steady growth in this branch of university work. Aside from a number of instructors and students from the Departments of Botany and Zoology and Entomology of the University, there were in attendance representatives of a number of other Ohio colleges and high schools. Courses in General Zoology, Botany, Entomology, Invertebrate Morphology, Embryology and Ornithology were given. Collecting trips to different portions of the bay, the lake shore, and the country adjacent to the laboratory were productive of many interesting objects for study, and reports on some of these will appear in later numbers of the Naturalist. Special excursions to Castalia, Lakeside, Kelley’s Island, Put-in-Bay and Green Island were not only enjoyable, but furnished much of profit in the way of collections. One of the most appreciated feature was a visit to the U. S. Fish Commission Hatchery at Put-in-Bay, which furnished an opportunity to watch the plankton work done on the Shear Water under the direction of Prof. H. B. Ward.
A series of Friday afternoon lectures on biological problems, with titles, “Adaptation in Animal Life,” “Aquatic Life,” “Air-breathing Animals,” “Some Phases of Evolution,” “Some Problems in Applied Zoology,” “Mimicry and Protective Resemblance in Nature,” were given by Prof. Osborn, and one on “Natural Selection,” by Prof. Landacre.
THE MAXIMUM HEIGHT OF PLANTS III.
John H. Schaffner.