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. During the past summer, the plants mentioned below were measured by the writer in northern Kansas. A number of species grew far beyond the height mentioned in our manuals, although there was a very severe drought the entire summer. The height given probably approaches the maximum in but few cases and a better growing season might produce a very noticeable increase in size. The measurements are given in comparison with those of Britton and Brown’s Flora.