Scientific Intelligence. 79 



yellowish, insipid, insoluble in water, soluble in alcohol and ether. 

 Crystals six-sided prisms, terminated by summits with three penta- 

 gonal faces. They burn with a red flame. Hot sulphuric acid dis- 

 solves them, and water precipitates them from the solution. Potash 

 when dissolved in water does not alter them, but when an alcoholic 

 solution is employed, a fine colour of turnsol is produced. If this 

 solution is evaporated, a salt is obtained which forms with sulphuric 

 acid a beautiful pink solution. Benzoyle consists of carbon 80-43 ; 

 hydrogen 4-91 ; oxygen 15. This Laurent considers is represented 

 by C 1 * H 3 O. Hence, we see that the chlorine has removed an 

 atom of hydrogen. — {Ann. de Chim. lix. 397). S 



IV. — Deaths of S'tgnior Nobili and Dr. Stromeyer. 



We regret to announce the death of M. le Chevalier Leopold No- 

 bili (de Reggio, which happened at Florence on the 5th of August 

 last, from an affection of the chest. Nobili, in the earlier part of his 

 life, served in the army. At what age he began to turn his attention 

 to philosophy does not appear, but after being occupied with some 

 theoretical speculations upon magnetism and light, he directed his 

 energies in 1825 to experimental researches ; he invented the gal- 

 vanometer with two needles, and subsequently added to this first in- 

 vention that of the comparative galvanometer. 2. The discovery 

 which introduced Nobili to the scientific world was that relative to 

 the colours developed upon metallic plates, which serve as poles in 

 different solutions for electro-chemical decompositions. 3. He in- 

 vented the thermo-multiplier ; for although Melloni assisted him, yet 

 the idea originated with Nobili. 4. He published some papers re- 

 lating to electro-physiological phenomena. 5. He made researches on 

 the production of electricity by heat, and on chemical action, and on 

 the relations which subsist between the two modes in which electri- 

 city is developed. 6. He directed his attention to the study of magne- 

 tism, and more particularly to the production of electric currents by 

 the influence of magnets. His papers were published in the Biblio- 

 theque Universelle, vols. 29, 33, 34, 35, 36, 37, 40, 44, 45, 47, 56, 

 57,64. 



Dr. Frederick Stromeyer, Counsellor and Professor of Chemistry 

 and Pharmacy in the University of Gottingen, and Inspector general 

 of the Apothecaries for the kingdom of Hanover, died on the 18th of 

 August last. He was originally a botanist, and only turned his at- 

 tention to chemistry when he obtained the chemical chair at Gottin- 

 gen. He then went to Paris and studied chemistry in Vauquelin's 

 laboratory. In 1817, he discovered the metal cadmium, and in 1821 

 he published an admirable volume of mineral analyses under the title 

 of Untersuckungen iiber die mviclmng der 3Iineralk'6rper und an- 

 derer da-mit vermandten Stibstanzm, containing 30 analyses. 



By the death of Stromeyer the University of Gottingen has expe- 

 rienced a heavy loss, and a blank has been created among the sup- 

 porters of Science which will not soon be supplied. 



