1814.] Mr. Tobias Loiuitz. 163 



think it very likely that he may have published several papers 

 which have not come to my knowledge. 



1. A new method of concentrating vinegar and reducing its acid 

 to a solid and crystalUzed state, published in the Nova Acta of the 

 Petersburg Academy, vol. vii. p. 330. This curious paper was 

 inserted in the English translation of Crell's Annals, edited by Dr. 

 Richard Pearson, and a collection of very great merit. 



2. A continuation of the dissertation on the crystallization of 

 vinegar exhibiting \arious newly discovered methods of accomplish- 

 ing it. Nova Acta, t. viii. p. 316. 



3. Observations on a method of crystallizing common salt by 

 cold, and of bringing it to a state of purity. Ibid, p. 3G4. 



4. A description of a remarkable meteor seen at Petersburg on 

 the 18th June, 1790. Ibid. p. 384. 



5. New experiments on the crystallization of the caustic alkalies. 

 Nova Acta, t. ix. p. 311. This paper was inserted in one of the 

 early numbers of Nicholson's Journal. 



6. A report on the metallization of the earths, inserted in the 

 historical department of the same volume of the ylcta, p. 32. 

 Lowitz repeated the experiments of Ruprecht and Tondi, and 

 found their results erroneous, as had been done by other chemists. 



7. A new method of purifying putrid water. Nova Acta, t. x. 

 p. 187. This was by means of charcoal. The Russians, in con- 

 sequence of this paper, charred the inside of their casks, and found 

 that water might be kept in them in that state, at sea, for any length 

 of time without becoming putrid. 



8. Strontian detected in ponderous spar as a secondary consti- 

 tuent. Ibid. p. 321. This is an excellent paper, in which the 

 properties of strontian are described at great length. It would 

 appear that Lowitz oi)tained muriate of strontian accidentally, 

 before he was aware of the experiments made by other chemists ou 

 this new earth. 



9. An exposition of a set of new observations respecting the 

 crystallization of salts, and an account of a new method of obtain- 

 ing more regular crystals than are usually procured. Nova Acta, 

 t. xi. p. 271. The method is to put some of tlie dry salt into « 

 saturated solution and to set it aside. 



10. Experiments on the method of reducing alcohol to the 

 greatest possible state of concentration. Ibid, p. 299. The method 

 which Lowitz proposes is to dissolve potash in them. But Richter's 

 method, by means of muriate of lime is cheaper and easier. 



11. New experiments on artificial cold. Nova Acta, t. xii. 

 p. 275. He used first potash and snow, but afterwards found that 



j muriate of lime and snow imswercd nearly as well. These experi- 

 ments were copied into Nicholson's Journal from the Annalos de 

 Chimic. 



12. A chemical analysis of the hyacinths of Siberia, discovered 

 by I^axmann. Ibid. p. 300. The resuh of the analysis was a« 

 iullowk : 



L a 



