PEA] 



[PEE 



Pratt, (Archd.) John Henry. 22. On Chinese 

 astronomical epochs. Phil. Mag. XXIII., 1862, 

 pp. 1-9. 



23. Calculation of the undulation of an 



unstiffened roadway in a suspension bridge as a 

 heavy train passes over it ; and remarks upon 

 the effect of a suspended iron girder in deadening 

 the undulation. Phil. Mag. XXIIL, 1862, pp. 

 445-457. 



24. Tests of the truth of the fluid theory 



of the figure of the Earth. Phil. Mag. XXIV., 

 1862, pp. 409-417, 507-508. 



25. Geometrical proof of the fundamental 



principle of LAPLACE'S Functions. Phil. Mag. 

 XXIV., 1862, pp. 504-507. 



Pratt, N. A. On two sulphurets of Copper from 



the Canton (Ga.) Mine. Silliman, Journ. 



XXIIL, 1857, pp. 409-415. 

 Pratt, Samuel Peace. Description of a new 



Clinometer. Thomson, Ann. Phil. I., 1821, p. 



43. 



2. Remarks on the existence of Anoplo- 



therium and Palaeotherium in the lower fresh- 

 water formation at Binstead, near Hyde, in the 

 Isle of Wight. [1830.] Geol. Soc. Proc. I., 

 1834, p. 239 ; Geol. Soc. Trans. III., 1835, pp'. 

 451-454. 



3. On the osseous cave of Santo Giro, 



about two miles to the S. E. of Palermo. [1833.] 

 Geol. Soc. Proc. I., 1834, pp. 487-488. 



4. A description of the geological charac- 

 ter of the coast of Normandy. [1837.] Geol. 

 Soc. Proc. II., 1838, pp. 546-548. 



5. Descriptions of some new species ot 



Ammonites found in the Oxford Clay on the 

 line of the Great Western Railway near Chris- 

 tian Malford. Ann. Nat. Hist. VIII., 1842, pp. 

 161-165. 



6. On the coal deposits of the Asturias. 



Brit. Assoc. Rep. 1845 (pt. 2), p. 49. 



7. Geological position of the bitumen used 



in asphalte pavements. Geol. Soc. Journ. II., 

 1846, pp. 80-81. 



8. On the geology of the neighbourhood 



of Bayonne. [1843.] Geol. Soc. Proc. IV., 

 1846, pp. 157-159 ; Paris, Soc. Geol. Mem. II., 

 1846, pp. 185-188. 



9. On the geology of Catalonia. Geol. 



Soc. Journ. VIII., 1852, pp. 268-273. 



Pratten, Henry, and J. G. Norwood. Notice 

 of Producti found in the Western States and 

 Territories, with descriptions of twelve new 

 species. Philad. Journ. Acad. Nat. Sci. III., 

 1855-58, pp. 5-22. 



2. Notice of the genus Chonetes, as 



found in the Western States and Territories, 

 with descriptions of eleven new species. Philad. 

 Journ. Acad. Nat. Sci. III., 1855-58, pp. 23-32. 



Pratten, Henry, and J. G. Norwood. 3. 



Notice of Fossils from the carboniferous series 

 of the Western States, belonging to the genera 

 Spirifer, Bellerophon, Pleurotomaria, Macro- 

 cheilus, Natica, and Loxonema, with descrip- 

 tions of eight new characteristic species. Philad. 

 Journ. Acad. Nat. Sci. III., 1855-58, pp. 71- 

 77. 



Pravaz, . Considerations sur quelques ano- 

 malies de la vision. Archiv. Gen. de Med. 

 VIII., 1825, pp. 59-84. 



Prax, . Un voyage de Suez a Medine. 



Paris, Soc. Geogr. Bull. XV., 1841, pp. 129- 

 152. 



2. Carte de la regence de Tripoli, et des 



principales routes commerciales de 1'interieur de 

 1'Afrique. Paris, Soc. Geogr. BulL XIV., 1850, 

 pp. 81-103. 



Prazmowsky, A. Erreurs personnelles qui af- 

 fectent les passages des astres, etc. ; moyens de 

 les eliminer. Moigno, Cosmos, IV., 1854, pp. 

 545-548. 



2. Rapport sur les travaux de 1'Expedition 



de Bessarabie, entreprise en 1852, pour terminer 

 les operations de la mesure de 1'arc du meridien. 

 [1853.] St. Petersb. Acad. Sci. Bull. XII., 

 1854, col. 84-96. 



3. Observation de 1'e'clipse totale de Soleil 



du 18 Juillet I860. Paris, Comptes Rendus, 

 LI, 1860, pp. 195-197. 



Prechtl, Johann Joseph. [Theorie des Fliegens.] 

 Gilbert, Annal. XIX., 1805, p. 376. 



2. Ueber Identitat des Licht- und Warme- 



stoffs. Gilbert, Annal. XX., 1805, pp. 305- 

 333 ; XXIIL, 1806, pp. 474-476. 



3. Noch ein Mittel, die mathematische 

 Theorie von der Fortpflanzungsgeschwindigkeit 

 des Schalles mit der Erfahrung zu vereinigeu. 

 Gilbert, Annal. XXL, 1805, pp. 449-456. 



4. Versuche zur Bestimmung des absoluten 



Wider stan des, den eine in der Luft (auf die 

 Richtung ihrer Bewegung senkrecht) bewegte 

 Flache leidet. Gilbert, Annal. XXIIL, 1806, 

 pp. 129-170. 



5. Schreiben, die vorhergehende Abhand- 



lung und die Luftschifferei betreffend (Versuche 

 zur Bestimmung des absoluten Widerstandes, 

 u.s.w.). Gilbert, Annal. XXIIL, 1806, pp. 

 171-177. 



6. Erklarung der Erscheinung der grossen 



Reaction, welche lockerer Sand der Explosion 

 des Schiesspulvers entgegensetzt ; und des 

 Phanomens von der Verminderung der Beweg- 

 ung der Luft in langen Rohren. Gilbert, An- 

 nal. XXIIL, 1806, pp. 249-262. 



A 2 



