1890.] Presents. 149 



taken with two eyes agrees very well. In the case of one observer, 

 number 30, although no difference could be traced on November 27, 

 1889, the difference was half a division on May 7, 1890, and sufficient 

 for him to be satisfied that when he made a match with one eye it did 

 not appear a match witU the other. 



Presents, June 5, 1890. 

 Transactions. 



Baltimore : Johns Hopkins University. Circulars. Vol. IX. 



No. 80. 4to. Baltimore 1890. The University. 



Berkeley: University of California. Library Contents- Index. 



Vol. I. 8vo. Berkeley 1889-90. The University. 



Cracow : Academic des Sciences. Bulletin International. Avril, 



1890. 8vo. Cracovie 1890. The Academy. 



Dijon: Academie des Sciences, Arts et Belles-Lettres. Memoires. 



3me Serie. Tome II-III ; 4me Serie. Tome I. 8vo. Dijon 



1874-89. The Academy. 



Dublin : Royal Society of Antiquaries of Ireland. Journal of the 



Proceedings. Ser. 5. Vol. I. No. 1. 8vo. Dublin 1890. 



The Society. 



Gottingeu : Konigl. Gesellschaft der Wissenschaften. Nachrich- 

 ten. 1889. 8vo. Gottingen 1889. The Society. 



Hertford : Hertfordshire Natural History Society and Field Club. 

 Transactions. Vol. V. Part 8. 8vo. Hertford 1890. 



The Society. 



Leipsic: Konigl. Sachsische Gesellschaft der Wissenschaften. 

 Abhandlungen. Mathemat.-physisch. Classe. Band XV. 

 No. 7-9 ; Ditto. Philolog.-historisch. Classe. Band XI. No. 6. 

 4to. Leipzig 1889-90 ; Berichte. Mathemat.-physisch. Classe. 

 Band XLI. No. 2-4 ; Ditto. Philolog.-historisch. Classe. 

 Band XLI. No. 4; Register zu den Jahrgangen 1846-85 der 

 Berichte und zu den Banden I-XII der Abhandlungen der 

 Mathemat.-physisch. Classe. 8vo. Leipzig 1889-90. 



The Society. 



London: British Association for the Advancement of Science. 



Report of the Fifty-ninth Meeting, Newcastle-upon-Tyne, 1889. 



8vo. London 1890. The Association. 



London Mathematical Society. Proceedings. Vol. XX. Nos. 



368-369. 8vo. London 1889. The Society. 



Marine Biological Association. Journal. New Ser. Vol. I. 



No. 3. 8vo. London 1890. The Association. 



Mineralogical Society. The Mineralogical Magazine. Vol. IX. 



No. 41. 8vo. London 1890. The Society. 



