288 ENTOMOLOGICAL NEWS. [June, 'l6 







University of Wisconsin, have been chiefly instrumental in advocating 

 this project. The Secretary will be glad to hear from members of the 

 Society who have soil thermographs, and are interested in the arrange- 

 ments for such a co-operative investigation. 



A four-day field trip to the dunes of Lake Michigan, in the vicinity 

 of Chicago, will be conducted from June 14 to 17 by Prof. H. C. 

 Cowles, Prof. V. E. Shelford, and Dr. G. D. Fuller, in case a sufficient 

 number of persons express interest in the trip. It is expected that one 

 day will be devoted to the sand ridges and slough near Buffington and 

 Clarke, Indiana, largely under the guidance of Professor Shelford. 

 Other days will be devoted to the dune successions at Miller, Indiana, 

 the moving dunes at Dune Park, the eroding dunes at Michigan City, 

 Indiana, and those at Sawyer, Michigan, where telescoped successions 

 and dune and climax forests are well displayed. The interest will 

 centre in the interrelations of plants and animals, and the relation of 

 each to the environmental conditions. The entire expense for lodging, 

 meals, and transportation for the four days will be about $10. There 

 will be no further general announcement of this trip. Members who 

 plan to join it, or have even a remote prospect of doing so, are re- 

 quested to communicate at once with one of the conductors. If 

 enough favorable replies are received to justify offering the excursion 

 a definite announcement will be made to those interested. 



A field trip will be conducted at San Diego, California, on August 

 12 to 14, in connection with the meeting of the Pacific Division of the 

 American Association. Prof. W. E. Ritter has invited members of the 

 Society to visit the Laboratory of the Scripps Institution at La Jolla, 

 near San Diego, and to examine the work and environs of that centre 

 of marine ecological investigations. One or two days will also be 

 spent, under competent guidance, in studying the biota of the chapar- 

 ral at several favorable localities near San Diego, and in the foothills 

 of the Cuyamaca Mountains. Further details of the San Diego trips 

 will be announced about May 15. 



Prof. A. O. Weese, of the University of New Mexico, proposes to 

 conduct a field trip in the vicinity of Albuquerque, New Mexico, for 

 those who may be able to stop off there on the way to or from San 

 Diego. Several other men located on transcontinental railways have 

 expressed a willingness to give some of their time to members of the 

 Society who may be able to stop over with them at any time during the 

 summer. The Secretary will be glad to have early information from 

 those intending to be present at San Diego, and he will be glad to give 

 information to prospective transcontinental travelers regarding possible 

 stop-overs with other members. 



The Secretary-Treasurer is no longer in Baltimore, but should be 

 addressed 



FORREST SHREVE, Tucson, Arizona. 



