LECTURER AND MEETINGS OF SOCIETIES. 237 



Mossos. Mrs. Elizabeth (J. Biitton. 



Extracts from life of Liuna'iis. Mrs. Lydia l»iller Zoll. 



Astronomy. Miss M. F. Borst. 



Structure of eye of lAmax maximiis. Miss Aiiuie P. lleui-huian. 



Juuipiui;- spiders, ilrs. Elizabeth G. I'eckham. 



The Myrnuleon. Mrs. Frances Ehees Burket. 



Marble quarry. Miss Kate Carter. 



Variation in leaves of Qiicrciis n'ujra. Miss .lane Frances Wiun. 



Moths and buttertlies, Mitli observations on I'apUio asterUis. Mrs. Annabel Cook 



Whitcomb. 

 Entomology; a new Pyralid; autumn buttertlies. Miss Mary Vj. Mnrtfeldt. 

 An undescribed I'lojlla. Miss Mary E. Hill. 



A bit of family history. {Memhracis h'moiula.) Miss Elizabeth G. Hughes. 

 The shells of New Jersey. Mrs. H. D. Mitchell. 

 Marine Alg;e. Mrs. Cora H. Clarke. 

 Meteorology. Mrs. L. H. Grenewald. 

 Mount Blauc and the ice fields. Mrs. Ada D. Davidson. 

 Cuiiilifera'; the oak family. Mrs. Emma J. (Jurtis. 

 Bird architecture. Miss Harriet Brown Bailey. 

 Other worlds than ours. (Illustrated by lantern slidt^s.) Miss Mary Proctor. 



PAPEKS EKTEEED TO BE IJEAU AT THE MEETING OF THE XATT02S"AL ACADEMY 

 OF' SCIENCES, APRIL 20-23, 1897. 



The inlluence of environment upon the biological processes of the various members 

 of the Colon group of bacilli. — An experimental study. Adelaide Vfard Peek- 

 ham, M. D. 



On the energy involved in recent earthquakes. T. C. Mendenhall. 



On a ring pendulum for absolute determinations of gravity. T. C. Mendenhall and 

 A. S. Kimball. 



Biographical memoir of (J. Brown Goodi-. S. P. Langley. 



Biographical memoir of Thomas L. Casey. H. L. Abbott. 



Biographical memoir of Charles E. Brown-Scqnard. H. I'. Bowditch. 



lUograpliical memoir of Hubert A.Newton. J. W. (Jibbs. 



Biograidiical memoir of George H. Cook. G.K.Gilbert. 



On the variation of latitude. S. C. Chandler. 



The position of the Tarsiida and relationshii) to the phylogeny of man. Theoilore 

 Gill. 



A new harmonic analyser. A. A. ilichelson and S. W. Stratton. 



Variation of latitude and constant of aberration from observatious at Columbia 

 Universit}^. J. K. Eees, H. Jacoby, and H. S. Davis. 



On recent borings in coral reefs. A. Agassiz. 



Notes of experiments upon the Rontgen rays. Arthur W. Wright. 



TITLES OF THE SATtJKBAY LECTURES FOR 1897. 



Course \.—IT)jdr<><jraphy. 



March 13. — Rivers of the United States. F. H. Newell. 



March 20. — Waterfalls of the United States. Marius R. Campbell. 



March 27. — Niagara. G. K. Gilbert. 



Course 2. — Current topics. 



April u.-7-The Eastern question. Benjamin Ide Wheeler. 



Jjiril 10. — New light on alchemy. H. Carringtou Bolton. 



April 17. — Food adulterations. Harvey W. Wiley. 



April .'/. — Motlern explosives. Charles E. Munroe. 



May 1. — X-rays and their applications. E. A. de Schweinitz. 



