78 THE AMERICAN MUSEUM JOURNAL 



April 2 1. — "Optical Illusions." 



April 28. — Dr. Charles H. Tyndall, "Wireless Telegraphy." 



Tuesday evenings at 8 o'clock. 

 March 6. — Mr. Oscar Phelps Austin, "A Tour of the World's 



Markets and Market Places." 



March 13. — Mr. B. Bulkley, "The Yellowstone National Park." 

 March 20. — Prof. Herschel C. Parker, "First Ascents and 



Explorations in the Canadian Alps." 



March 27. — -Mr. A. H. Fish, "The Land of Lewis and Clark." 

 April 3. — Dr. C. F.Walker, "The Lake Superior Copper Country. " 

 April 10. — Mr. James Arthur MacKnight, " The South To-day. " 

 April 17. — Mr. William T. DoRWARD, "The City of Washington." 

 April 24. — Messrs. Albert Ulmann, R. P. Bolton, and Edward 



Hagaman Hall, "Historic Landmarks of New York City." 



LINN^AN SOCIETY COURSE. 



In co-operation with the New York Linnaean Society a course of 

 lectures was delivered on Wednesday evenings according to the fol- 

 lowing programme: 



February 21. — Dr. Alfred G. Mayer, "Tortugas Marine Lab- 

 oratory of the Carnegie Institution — its Aims and Problem's. " 



March 7. — ^Mr. Edgar F. Stead, "New Zealand Bird-Life. " 



March 14. — ^Dr. Robert T. Morris, "A Naturalist's Camping 

 Trip to Hudson Bay." 



March 21. — Mr. G. Abbott, "Bird-Hunting with a Camera." 



MEETINGS OF SOCIETIES. 



The New York Academy of Sciences holds its regular meetings 

 at 8:15 P.M. at the Museum in the following order: 



First Mondays. — Business meeting and Section of Biology. 



Second Mondays. — Section of Geology and Mineralogy. 



Third Mondays. — Section of Astronomy, Physics and Chemistry. 



Fourth Mondays. ^Section of Anthropology and Psychology. 



The Linnaean Society, the New York Entomological Society 

 and the Torrey Botanical Club hold meetings upon Tuesday 

 evenings, and the New York Mineralogical Club upon Wednesday 

 evenings as announced. 



The meetings of all the societies are open free to the public 

 and visitors are made welcome. 



