INDEX to VOL. XVIII. 



ilCETIC ether, action of sodium and 



iodide of ethyl upon, 228. 

 Acetic ether, on the successive action of 



sodium and iodide of ethyl on, 91. 

 Acids of the sulphur series, contributions 



to the history of the, (I.), 502. 

 Aconitine, physiological action of, on the 



frog, 46. 



Airy (G. B.), note on an extension of the 

 comparison of magnetic disturbances 

 with magnetic effects interred from ob- 

 served terrestrial galvanic currents ; and 

 discussion of the magnetic effects in- 

 ferred from galvanic currents on days 

 of tranquil magnetism, 184. 



Airy (H.) on a distinct form of transient 

 hemiopsia, 212. 



Alcohol, experiments on the effects of, on 

 the human body, 362. 



Alumina, note on the spectrum of, 548. 



Andrews (T.), Bakerian Lecture, on the 

 continuity of the gaseous and liquid 

 states of matter, 42. 



Animal mechanics, on some elementary 

 principles in: No. II., 22; No. III., 

 257 ; No. IV., 359. 



Anniversary Meeting, November 30, 1869, 

 101. 



Annual meeting for election of Fellows, 



June 2, 1870, 396. 

 Anthranilic acid, on the action of cyanogen 



on, 89, 99. 

 Aplanatic searcher, on an, and its effects 



in improving high-power definition in 



the microscope, 327. 

 Apomorphia, on the crystalline form of 



chloride of, 88. 

 Approach caused by vibration, on, 93. 

 Arc of meridian, survey of, at the Cape of 



Good Hope, 110. 

 Arcturus and a Lyra?, approximate de- 

 terminations of the heating-powers of, 



159. 



Argo, spectroscopic observations of the 

 nebula of, 245. 



Armstrong (H. E.), contributions to the 

 history of the acids of the sulphur se- 

 ries : I. On the action of sulphuric an- 



VOL. XVIII. 



hydride on several chlorine and sulphur 



compounds, 502. 

 Atropine, physiological action of, on the 



frog, 46. 

 Auditors, election of, 94. 

 Australia, on the fossil mammals of: 



Part III. Diprotodon australis, 196. 



Bakerian Lecture, on the continuity of 

 the gaseous and liquid states of matter, 

 42. 



, on the precarboniferous floras of 



north-eastern America, 333. 



Barlow (W. H.) on the cause and theo- 

 retic value of the resistance of flexure in 

 beams, 345. 



Baryta, note on the spectrum of, 548. 



Bateman (J. F.), some account of the Suez 

 Canal, in a letter to the President, 132. 



Beams, on the cause and theoretic value 

 of the resistance of flexure in, 345. 



, on the theory of continuous, 176, 



178. 



Blood, on the presence of sulphocyanides 

 in the, 16. 



Bottle for taking samples of sea-water 

 from great depths, 413. 



Broadbent (W. H.) on the structure of 

 the cerebral hemispheres, 51. 



Bromine, action of, on ethylbenzol, 123. 



Busk (Gr.) on a method of graphically re- 

 presenting the dimensions and propor- 

 tions of the teeth of mammals, 544. 



Busti aerolite, the, 148. 



Calcium usnate, 225. 



Candidates for election, list of, March 3, 



1870, 231. 

 Candidates selected, list of, May 5, 1870 



333. 



Carpenter (W. B.) on the rhizopodal 

 fauna of the deep sea, 59. 



Carpenter (W. B.), Jeffreys (J. G-.), and 

 Thomson (Wyville), preliminary Report 

 of the scientific exploration of the deep 

 sea in H.M. Surveying- Vessel ' Porcu- 

 pine ' during the summer of 1869, 98, 

 397. 



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