

504 



INDEX. 



Tciylor (J.), report on the state of 



knowledge respecting mineral 



veins, 1 ; on the depths of mines, 



427. 

 Telescope, reflecting, 420. 

 Terrestrial magnetic force, on the 



direction of, 106 ; on the intensity 



of, 118. 

 Thermo-electricity, on, 384. 

 Thermostat, or heat-governor, on the, 



419. 

 Tides, directions for observations of 



the, 485. 

 Timber, table of the mean strength 



and elasticity of, 103. 

 Toad, on the natural history of, 441. 

 Trigonometry, on the science of, 288. 

 Turner (Dr.), experiments on atomic 



weights, 399. 



Ure (Dr.) on the thermostat, or heat- 

 governor, 419. 



Vegetable anatomy, on, 27 ; vege- 



table fertilization, 4.5 ; vegetable 



physiology, 49. 

 Veins, mineral, on our knowledge 



respecting, 1. 

 Vibrations, musical, in tubes, on, 



140. 



Water, on the compressibility of, 

 131, 353. 



a steam-engine for pumping, 



421. 



Waves, on the problem of, 142. 



Wharton (W. L.) on a barometer 

 with an enlarged scale, 414. 



on a steam-engine for pump- 

 ing water, 421. 



Whewell (Rev. W.), his address, xi. 



Willcox (C.) on the naturalization in 

 England of the Mytilus crenatus, 

 448. 



Yarrell (W.) on the reproduction of 

 the eel, 446. 







Printed by Richard Taylor, Red Lion Court, Fleet Street. 



\S 



