1886.] 



Presents. 



Helmholtz (H. von), For. Mem. R.S. Handbuch der Physiologischen 

 Optik. Lief 3. 8vo. Hamburg 1886. The Author. 



Hennessy (H.), F.R.S. On the Fluid State of Bodies composing our 

 Planetary System. 8vo. Dublin 1886. The Author. 



Lawes (Sir J. B.), Bart., F.R.S. Memoranda of the Field and other 

 Experiments at Rothamsted. 4to. London 1886. 



The Author. 



Leuckart (Rudolf), For. Mem. U.S. Die Parasiten des Menschen. 



Band I. Lief. 3. 8vo. Leipzig 1886. The Author. 



Mueller (Baron Ferd. von), F.R.S.. Select Extra- Tropical Plants. 



New Edition. 8vo. Melbourne 1885 ; Description and Illustrations 



of the Myoporinous Plants of Australia. II. Lithograms. 4to. 



Melbourne 1886. The Author. 



Quatrefages (A. de), For. Mem, R.S, Histoire Generale des Races 



Humaines. 8vo. Paris 1887, The Author. 



Symons (G. J.), F.R.S. British Rainfall, 1885. 8vo. London. 1886, 



The Author. 



Tolstoi (Count) What I Believe, 8vo, London 1885. 



The Publisher. 



White (Ljeut.-Colonel) The Ordnance Survey of the United, King- 

 dom. 8vo. Edinburgh 1886, The Author, 



