76 JOURNAL OF THE [April, 



wall of the hole, punched before by a thrust of the stronger 

 dorsal piece, as soon as it is inserted there, after having some- 

 what retracted the ventral parts. This preventing a backward 

 motion, the resistance is given, necessary to push forward 

 another piece in alternation. At the same time the bored hole 

 is filed out to the size of the thickest part of the ovipositor As* 

 this part can be made thinner by displacing the constituent 

 pieces, the whole tool can be removed again out of the drilled 

 hole. An egg, between the two ventral pieces, will force them 

 from each other, and consequently be retained by them under 

 a slight springy pressure. By the reciprocal movement of the 

 two ventral pieces the egg will be forced downwards." 



Meeting of January i8th, 1889. 



The President, Mr. Charles F. Cox, in the chair. 



Forty-two persons present. 



The following Committees were appointed by the Chair : — 



Committee on Admissions : F. W. Devoe, W. R. Mitchell, W. 

 E. Damon, G. F. Kunz and W. Wales. 



Committee on Publications : J. L. Zabriskie, William G. De 

 Witt, E. B. Grove, Walter H. Mead and John L. Wall. 



Prof. Samuel Lockwood, Ph. D., addressed the Society on 

 " The Comparative Hygiene of the Atmosphere in relation to 

 Hay-Fever." This Address is published in this number of the 

 Journal, p. 49. 



Prof. Alexis A. Julien, Ph. D., read a Paper, entitled " Notes 

 on a New Ochraceous Thallophyte." This Paper was illustrated 

 by microscopical mounts and black-board sketches, and is pub- 

 lished in the January number of the present volume of the 

 Journal, p. 31. 



objects exhibited. 



1. A new Ochraceous Thallophyte : by A. A. Julien. 



2. Minute fossil shells, from Ireland : by K. M. Cunningham 

 (a visitor). 



3. Diatoms of the Atlantic Coast : by K. M. Cunningham. 



4. Mycelium of a fungus from the floor of a wine-cellar at 

 Newburgh, N. Y.: by Miss H. S. Wing ate (a visitor). 



5. A nest of Watch-glass Covers : by J. L. Zabriskie. 



