312 CHEMISTRY. 



Hindenburg (F. G.).- Dissertatio historico-critica de mistionum chemi- 



carum rationibus. 4 1811. 



HOBBES (THOMAS). De calore pluvia, vento, &c. See Hobbes 



(T.). Problemata physica. 12 1662. (Miscellaneous.) 

 HOEFER (UBERTO FRANCESCO). Memoria sopra il sale sedative na- 

 turale della Toscana, e del borace che con quello si compone. 8 Firenze, 

 1778. 



HOFFMANNUS (FRIDERICUS). See Narcissus (F. G.). Dissertatio so- 

 lennis circa nitrum. 4 [1712.] 



See Pott (J. H.). De sulphuribus metallorum. 4 [1716.] 



HOOKE (ROBERT). See Anonymous. Attempt (an) for the explication 



of the phenomena... touching the aire. 8 1661. 



HORSBURGH (JAMES). [Atmospherical register for indicating storms 

 at sea. obi. fol. London, 1816.] 



There are two copies of this register in the library of the R. S. In one of them the 

 atmospherical register or weather hook is filled up with the manuscript observations 

 registered on board H.M.S. Isabella, from May to October 1818, during Sir J. Ross's 

 first voyage. 



HORTULANUS Philosophus. Super tabulam smaragdinam Hermetis, 

 commentarius. See Collections. Hoc (in) volumine de alchemia con- 

 tinentur haec, &c. 4 1541. 



Borellius says : Hortulanus in tabulam Hermetis smaragdinam : Idem Gallicedic- 

 tus ; Le philosophe des Jardins maritimes. 



HOWARD (LUKE). Essay on the modifications of clouds. 8 London, 



1832. 

 . The climate of London, deduced from meteorological observations 



made in the neighbourhood ; 2 vols. 8 London, 1818 & 1820. 

 . , from meteorological observations made in the metropolis and 



at various places around it; 3 vols. 8 London, 1833. 

 HULME (NATHANIEL). An extemporaneous method of impregnating 



water with fixed air. See Hulme(N.). A safe and easy remedy, &c. 



4 1778. (Anatomy.) 

 HUBER (Jon. JAC.). De aere atque electro ceconomiae animali famu- 



lantibus. See Huber (J. J.). De aere, &c. 4 1747. (Anatomy.) 

 HUMBOLDT (ALEXANDREC^). Fragmensde climatologie Asiatique. 



See Humboldt (A. de). Fragmens de geologic, &c. 8 1831. (Geo- 

 logy.) 

 HUME ( ). Analysis of the water from the ebbing and flowing stream 



in the harbour of Bridlington. 8 London, 1816. 

 HWALSTROM (JACOBUS). Dissertatio gradualis qua dubia quaedam, 



contra transmutationem aquarum mota refelluntur ; sub praesidio J. G. 



Wallerii. 4 Holmice, 1761. 



I. 



IAHN (Jon. GEORG.). Experhnenta et conjecture circa sedimentum 

 olei vitrioli album ; praeside H. F. Delio. 4 Erlangce, [1764.] 



IBN-SINA (ABOU-ABY HOCEIM). See Avicenna. 



INGEN-HOUSZ (JEAN). Experiences sur les vegetaux, specialment sur 

 la propriete qu'ils por-sedent soit d'ameliorer Fair quand ils sont au soleil, 

 soit de le corrompre la nuit ; auxquelles on a joint une methode nou- 

 velle de juger du degre de salubrite de 1'atmosphere ; 2 vols. 8 Paris, 

 1787 if 1789. 



. Experiments upon vegetables, discovering their great power of 



purifying the common air in the sunshine, and of injuring it in the 



