( 88 ) 



(22) Bij de behandeling der looiftof worden de proeven van DAVY dikmaals 

 door de Scheikundigen vcrineld: ik wil hier de getuigenisfen van twee be- 

 roemde Scheikundigen over dien arbeid aanhalen. HATCHETT zegt in zijne 

 Verhandeling on an artificial substance which possesses the principal characteristic 

 properties of tannin, in Phil. Tram. V. XCV. p. 212, fprekende van de looi- 

 llof , the subject has received the greatest extension and some of the most valu- 

 able additions from the ingenious labours of Mr. DAVY , particularly the discovery 

 of the important fact , that catechu or terra japonica consists principally of tannin : 

 en BOSTOCK fchrijfc in Journal of Natural Philosophy , Chemistry and the Arts. 

 V. XXIV. p. 2. Mr. DAVY in his experiments on astringent substances had 

 pointed out with his accustomed sagacity the different effects that are produced in 

 the union of stlutions of tan and jelly , according to their degree of concentration. 



(23) The President and Council of the Royal Society adjudged the medal on Sir 

 GODFREY COPLEY'S donation for the year 1805 to HUMPHRY DAVY, Esq. F. R. S. 

 for his various communications published in the Philosophical Transactions. Phil. 



Trans. V. XCVI. 1806. Behalve deze bemoeijingen moet ik nog vermelden 

 de navolgende : Account of a simple method of estimating the changes of volume 

 produced in gases , by alterations of temperature and of atmospheric pressure , in 

 the course of Chemical Experiments ; Observations on the appearances produced by 

 the collision of steel with hard bodies en Note on the fluoric acid in Wavettite , en 

 on the Analysis of soils , as connected with their improvement , in V. IV. p. 32 , 

 103. 1803. en V. XIV. p. 267. 1806. V. XII. p. 81. 1805. van het Journal of 

 Natural Philosophy. 



(24.) Zie de aangehaalde Verhandelingen in NICHOLSON'S Journal. 



(25) De Electrifche en Galvanifche proeven werden dadelijk bij zijne plaac- 

 fing aan de Stichting van RUMFORD en onophoudelijk door DAVY voortgezet en 

 velerleije ontdekkingen gedann: men lette op de navolgende Stukken , die zij- 

 nen grooten en meer bekenden arbeid zijn voorafgegaan : An account of some 

 Galvanic combinations , formed by the arrangement of single metallic plates and 



tiuidi 



