26 
Royal Irish Academy, 
Monday, January 28, 1889. 
Rev. De. Haughton, f.h.s.. President, in the Chair. 
Professor J. P. O'Eeilly, c.e., read a Paper on " The Directions of 
Jointings in the ITeighbourhood of Bray." 
The Secretary read for Brigade-Surgeon C. Sibthorpe, f.k.q.c.p., 
Notes on Pilaria sanguinis hominis." 
The President called attention to an Ancient Tombstone, found in 
the Graveyard of All Hallows Monastery, near Eathdrum, Co. "Wicklow, 
which had been presented to the Academy by W. P. Littledale, Esq. 
Donations to the Library were announced, and thanks were voted 
to the Donors. 
Mr. "W. J. Doherty moved and Mr. George Coffey seconded the 
following : — 
"That the Council of the Academy be recommended to prepare 
and print, for the use of the Members and the public, a descriptive 
list of all articles in the Museum of the Academy that are not 
enumerated in Sir William Wilde's Catalogue ; and to have a com- 
plete record made and printed, for similar use, of all Irish Antiquities 
and other articles that are to be transferred to the Museum of Science 
and Art, Dublin. 
Which was adopted. 
Monday, Pebruary 11, 1889. 
Rev. Dr. Haughton, p.r.s., President, in the Chair. 
Mr. Justice O'Hagan, Yice-President, took the Chair while the 
President read a Paper on "Geometrical Illustrations of Newlands' 
andMendelejeff 's Periodic Law of the Atomic Weights of the Chemical 
Elements. Part III. The Pifth and Sixth Periods of Seven Ele- 
ments following Hydrogen ; or the Zirconium and Tin double period. 
Part lY. The Mnth and Tenth Periods of Seven Elements following 
Hydrogen ; including Gold, Mercury, Bismuth, and Wolfram." 
Professor Bartholomew MacCarthy, d.d., read the Third Todd 
Memorial Lecture, Series III. Subject — " Synchronisms from the 
Book of Ballymote." 
Donations to the Library were announced, and thanks were voted 
to the Donors. 
