1871.] 



Presents. 



345 



General Conclusion. — The electric currents produced by the direct in- 

 fluence of unequal temperature or friction of platinum or copper electrodes, 

 in conducting liquids which do not act chemically upon those metals, have 

 their origin in temporary changes of cohesion of the layers of metal and 

 liquid which are in immediate and mutual contact, and may be considered 

 a very delicate test of the kind and amount of temporary molecular 

 movements produced by those causes. 



Presents received February 2, 187L 



Transactions. 



Devonshire Association for the Advancement of Science, Literature, and 

 Art. Keport and Transactions. Yol. IV. Part 1. 8vo. Plymouth 

 1870. The Association. 



Turin : — R. Accademia deile Scienze. Atti. Appendice al Yol. IY. 

 Yol. Y. disp. 1-7. 8vo. Torino 1869-70. Notizia Storica deilavori 

 fatti dalla Classe di Scienze Eisiche e Matematiche negli anni 1864 

 e 1865. 8vo. Torino 1869. The Academy. 



Observations and Reports. 



Calcutta : — Report of the Meteorological Reporter to the Government 

 * of Bengal. Meteorological Abstract for the year 1869, by H. F. 

 Blanford. fol. Calcutta 1870. The Government of India. Another 

 copy. The Meteorological Office. 



London : — Army Medical Department. Report for the year 1868. Yol. 



X. 8vo. London 1870. The Department. 



San Fernando: — Observatorio de Marina. Anales. Seccion 2 a , Obser- 

 vaciones Meteorologicas, ano 1870. fol. San Fernando 1870. 



The Observatory. 



Turin : — Regio Observatorio. Bollettino Meteorologico ed Astronomico. 

 Anno 4. 1869. 4to. Torino. The Observatory. 



Journals. 



Bibliotheque Universelle. Archives des Sciences Physiques et Natu- 

 relles. No. 120, 153-156. 8vo. Geneve 1867-70. 



The Editor. 



Entomologist's (The) Annual for 1871. 12mo. London. 



H. E. Stainton, E.R.S. 



Symons's Monthly Meteorological Magazine. No. 54-60, 8vo. London 

 1870-71. The Editor. 



Zeitschrift fiir die gesammten Naturwissenschaften, redigirt von C, G. 

 Giebel und M. Siewert. Neue Folge. 1870. Band I. 8vo. Berlin, 



The Editors. 



VOL. XIX. 



