SECTIONS. — INDEX OF AUTHORS. 



141 



Hawkins (J. I.) on folding plates in books 

 and maps for the pocket, 1839, 132. 



on the safety rotation railway, 1840, 



196. 



* on Mr. Bakewell's anglemeter, 1840, 



2 ID. 



. on the friction of water against water, 



1843, 99. 

 — — on the formation of concrete, 1843, 



99- 



on a new oil for lubricating machinery, 



1843, 99. 



on the marine propeller invented about 



the year 1825 by Mr. Jacob Perkins, 

 1843, 100. 



on the economy of artificial light for 



preserving sight, 1844, ico. 



Hawksiiaw (Mr.) on the fossil footsteps in 

 the new red sandstone quarry at Lymm 

 in Cheshire, 1842, 56. 



Hawthorn (Mr.) on an improved method 

 of working the valves of a locomotive en- 

 gine, 1838, 160. 



■ on certain improvements in locomo- 

 tive and other engine boilers, 1840, 

 211. 



Hay (Sir A. L.) on the vitrified forts on 

 Noth and Dumiideer, Aberdeenshire, 



1859, 179. 



Hay (Dr. R.) on the geometrical basis of 

 beauty, and more particularly as applied 

 to architecture and the human form, 

 1850, 131. 



Hayden (Prof) on the physiological rela- 

 tions of albumen, 1857, no. 



Hayes (Dr. A. A.) on some modified results 

 attending the decomposition of bitumi- 

 nous coals by heat, 1857, 50. 



*Hayes (J. J.) on the mode of rendering 

 peat economically available as a fuel, and 

 as a source of illuminating gas, 1857, 

 181. 



Hearder (J. N.) on Arnott's stove, and the 

 construction of descending flues, and their 

 application to the purposes of ventilation, 

 1841, 105. 



Heath (Mr.) on the physical character, lan- 

 guages, and manners of the people of the 

 Navigators Islands, 1843, 67. 



Heaton (G-.) on the cause and prevention 

 of the oscillation of locomotive engines 

 on railways, 1849, 116. 



Heaton (Dr.), notice of a plant having on 

 the same branches the leaves of two dis- 

 tinct species of Cytisus, 1858, 115. 



Hector (Dr.) on the physical geogi-aphy of 

 the south-western regions of British N. 

 America, 1858, 153. 



* description of passes through the 



Eocky Mountains, 1859, 180. 



■ on the geology of Captain Palliser's 



Expedition in British North America, 



1860, 80. 



on the climate of the Saskatchewan 



district, in British North America, 1860, 

 ■ 172. 



Helmholtz (Prof.) on the mixture of homo- 

 geneous colours, 1853, 5. 



Heming (Dr.) on a disease of the tongue, 

 1844, 84. 



Henderson (A.) on ocean steamers and 

 clipper ships, 1854, 1 52. 



* on the measurement of ships, 1855, 



207. 



on Indian river steamers and tow 



boats, 1859, 235. 



Henfrey (Prof. A.) on the development of 



vegetable cells, 1845, 68. 



on the development of cells, 1846, 90. 



on the anatomy of monocotyledonous 



stems, 1847, 83. 

 on the development of pollen, 1848, 



84. 

 ■ on the development of the embryo of 



flowering plants, 1856, 85. 

 Hennessy (Prof. H.) on apparatus for de- 

 termining the distance of objects, 1843, 



102. 

 on the distribution of shooting-stars 



in the interplanetary spaces, 1850, 24. 

 on the connexion between geological 



theories and the theory of the figure of 



the earth, 1852, 21. 



on the researches of German geolo- 

 gists, 1852, 51. 



on isothermal lines, 1856, 39; 1857, 



30- 

 on the physical structure of the earth, 



1856, 26. 



on an instrument for observing verti- 

 cal currents in the atmosphere, 1856, 40. 



on the relative distribution of land 



and water as affecting climate at different 

 geological epochs, 1856, 66. 



on the homolographical maps of M. 



Babinet, 1856, 112. 

 ^ on the inundation of rivers, 1856, 



162. 



on the direction of gravity at the 



earth's surface, 1857, 24. 



on the solidification of fluids by pres- 

 sure, 1857, 25. 



on simultaneous isothermal lines, 



1857, 29. 



on the vertical currents of the atmo- 

 sphere, 1857, 30. 



on the distribution of heat over the 



surface of the British Isles, 1857, 30. 



on the existence of forces capable of 



changing the sea-level during different 



geological epochs, 1857, 69. 

 on the influence of the Gulf-stream on 



the climate of Ireland, 1857, 132. 

 on the decrease of temperature over 



elevated ground, 1858, 36. 

 on the heating of the atmosphere by 



contact with the earth's surface, 1858, 36. 

 on the figure of an imperfectly elastic 



fluid, 1859, 5. 

 on mild winters in the British Isles, 



1859, 50. 

 on studying the earth's internal struc- 



