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Watt, Charles. On the direct combination of 

 oxygen with atmospheric air, forming the bin- 

 oxide of azote, or nitrous gas, by the transmission 

 of these gases through a porcelain tube heated 

 to a bright i-edness. Chemist, I., 1840, p. 4. 



2. On the reduction of gold and silver to 



the metallic state from their solutions in acids. 

 Chemist, I., 1840, pp. 97-100. 



3. Method of bleaching and refining palm 



oil, animal and vegetable oils, &c. Chemist, I., 

 1840, pp. 113-115. 



4. On the reproduction of chromic acid 



from the muriate of protoxide of chrome by 

 means of peroxide of lead. Chemist, I., 1840, 

 pp. 129-130. 



5. On the adulteration of bread. Chemist, 



1., 1840, pp. 276-278. 



6. On the influence of temperature and 



climate on the fluid and solid states of oily and 



fatty bodies. Chemist, IV., 1843, pp. 3-5. 

 Watt, Charles and John. Analysis of a sample 



of guano from the island of Ichaboe, Africa. 



Chemist, V., 1844, p. 169. 

 Watt, Charles, jun. On the reproduction of 



chromic acid from the oxide of chromium ; and 



formation of chromate of lime. Chemist, II., 



1841, pp. 366-368. 

 ■ 2. On the various methods of alkalimetry. 



Chemist, V., 1844, pp. 58-64. 



3. On the various methods of acidimetry. 



Chemist, V., 1844, pp. 162-166. 



Watt, George. Dental chemistry of the mouth. 

 Quart. Journ. Dental Sci. I., 1857-58, pp. 77- 

 81. 



Watt, Gregory. Observations on basalt, and on 

 the transition from the vitreous to the stony 

 texture which occurs in the gradual refrigera- 

 tion of melted basalt, with some geological re- 

 marks. Phil. Trans. 1804, pp. 279-313. 



Watt, J. A. Sur I'aurore boreale du 8 Fevrier 

 1817. Bibl. Univ. IV., 1817, pp. 158-160. 



Watt, James. Some account of a mine in which 

 the aerated baiytes is found. [1789.] Man- 

 chester, Phil. Soc. Mem. III., 1790, pp. 598- 

 608. 



2. On the effects produced by different 



combinations of the *' Terra Ponderosa " given 

 to animals. [1789.] Manchester, Phil. Soc. 

 Mem. III., 1790, pp. 609-618. 



Watt, James. On the ventilation of mines. Til- 

 loch, Phil. Mag. XLVin., 1816, pp. 30-34. 



2. Improvements on the steam-engine. 



Edinb. Phil. Journ. II., 1820, pp. 1-7. 



I 3. Account of micrometers for measuring 



distances. Edinb. Phil. Journ. II., 1820, pp. 

 121-125. 



I. 4, Description of a new perspective ma- 



chine. Edinb. Phil. Journ. II., 1820, pp. 259- 

 262. 



Watt, John. Case of monstrosity. Glasgow 

 Med. Journ, IV., 1831, pp. 130-132. 



Watt, Mark. Observations on the Aranea geo- 

 metrica, A. obtextrix, A. domestica, and other 

 spiders ; and particularly on the power they 

 possess of fixing their threads horizontally, or at 

 any degree of inclination, to two perpendicular 

 bodies at a considerable distance from each other, 

 so as to suspend the circular part of their web 

 in an open space ; also some remarks on the 

 food of spiders, &c. [1830.] Edinb. Mem. 

 Wern. Soc. VI,, 1826-31, pp. 365-376. 



» 2. On the magnetic influence of the heat 



produced by the solar rays, &c. Edinb. New 

 Phil. Journ. III., 1827, pp. 170-174. 



3. Experiments directed to ascertain the 



principles of attraction and repulsion in the 

 lunar rays. Edinb. New Phil. Journ. V., 1828, 

 pp. 122-129; Froriep, Notizen, XXI,, 1828, col, 

 257-263. 



-* 4. Description of the Solar-Compass or 



Heliastron, with some observations. Edinb. New 

 Phil. Journ. IV., 1828, pp. 16-29. 



5. Description of a magnetometer for mea- 



suring the different degrees of magnetic inten- 

 sity throughout the year. Edinb. New PhU. 

 Journ. VI., 1829, pp. 376-379. 

 — 6. Notice of an experiment which proves 



that the magnetic needle does not point north 

 and south ; but only when it is suspended in a 

 position approaching to the horizontal or so 

 that it can show its natural bearings. Edinb. 

 New Phil. Journ. VI., 1829, pp. 379-383. 



Watt, R. On the formation of the rainbow. 

 Thomson, Ann. Phil. XIII., 1819, pp. 131- 

 133. 



Watt, W. G. Notice regarding the submarine 

 remains of a grove of fir trees in Orkney. 

 Edinb. Phil. Journ. III., 1820, pp. 100-102. 



Watters, J. On the habits and on the varieties 

 of some of the Laridse. Dublin, Nat. Hist. Soc. 

 Proc. I., 1849-55, pp. 86-88; Nat. Hist. Re- 

 view, II., 1855 {Proc), pp. 100-102. 



Watts, Henry. On the analysis of Hop-Ash. 

 Chem. Soc. Mem. Ill,, 1845-48, pp. 392-398 ; 

 Erdm. Journ. Prak. Chem. XLIV., 1848, pp. 

 124-126 ; Phil. Mag. XXXIL, 1848, pp. 54- 

 61. 



2. On the quantitative separation of mag- 

 nesia, and of the oxides of nickel, cobalt, and 

 zinc, from potash and soda. Chem. Soc. Journ. 

 n., 1850, pp. 99-103. 



3. On Phospho-cerite, a new mineral con- 

 taining phosphate of Cerium ; with observa- 

 tions on the separation of Cerium, Lanthanum, 

 and Didymium. Chem. Soc. Journ. II., 1850, 

 pp. 131-147. 



Watts, Henry. On fossil polyzoa. [1863.] Vic- 

 toria, Trans. Roy, Soc, VI., 1865, pp. 82-84. 



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