100 



Pampuch, Andreas. Das Malfatti- 

 Steiner'sche Problem. Bischofliches 

 Gyniiiasiuni au St. Steplian zuStrassbiirg 

 i. E. Jahresbericht iiber das Schuljalir 

 1901-1902, (XX). Strassburg (Druck 

 des „Elsasser"), 1902, (1-53, mit 10 

 Taf.). 26 cm. [6810]. 4477 



Faxeto, V[ilfredo]. Anwendungen der 

 Matberaatik auf Nationalokouomie. 

 [Eiicyklopadie d. mathem. Wissen- 

 schaften, Bd 1 G, Abt. 2.] Leipzig, 

 1901, (1094-1120). [1630]. 4478 



Pascal, E[rnesto]. Introduzione alia 

 teoria iiwariantiA-a delle equazioni di 

 tipo generale ai differenziali totali di 

 second' ordine. Memoria I. Ann. mat., 

 Milano, (Ser. Ill), 7, 1902, (1-37). [5220]. 



4479 



Program mi e riassunti di 



corsi nniversitari. Universita di Pavia, 

 Corso di analisi superiore Anno 1900- 

 1901. Boll, bibliogr. st. sc. mat., 

 Genova-Torino, 5, 1902, (26-31). [1230 

 5230]. 4480 



Eiigenio Beltrami. Math. 



Ann., Leipzig, 57, 1903, (65-107). 

 [0010]. ^ 4481 



Sopra i numeri Bernonl- 



liani. Milano, Rend. 1st. lomb., (Ser. 

 2), 35, 1902, (377-389). [3240]. 4482 



Pasch, M[oritz]. Ueber die Ein- 

 ftilirimg des Imaginaren. Arch. Math., 

 Leipzig, (3. Reihe), 7, 1903,(102-108). 

 [0820]. 4483 



Patemo, F. Saggio di una teoria 

 Rull'approssimazionenaturale o variabile 

 delle radici quadrate. Period, mat., 

 Livorno, 17, 1901-1902, (17-29). [0410]. 



4484 



Un teorenia sulle potenze 



dei numeri interi. Suppl. Period, mat., 

 Livorno, 5, 1901-1902, (38 -39). [041 0]. 



4485 



Patrassi, P. Le linee asintotiche nelle 



superficie del 2"" ordine. Period, mat., 



Livorno, 17, 1901-1902, (308-312). 



[7240]. 4486 



Peano, G. Formulaire de mathe- 

 niatiques. Paris (Naud), 1901, (VIII + 

 231). 25 cm. [0000 0070]. 4487 



Pearson, Karl. Mathematical con- 

 trilnitions to the theory of evolution. 

 XII. On a generalised theory of alter- 

 native inheritance, with special reference 

 to Mendel's Laws. London, Phil. Trans. 

 R. Soc, (Ser. A.), 203, 1904, (53-80). 

 [1630]. 4488 



Pearson, Karl. On a general theory 

 of the method of false position. Phil. 

 Mag., London, (Ser. 6), 5, 1903, (658- 

 668). [1640]. 4489 



On a novel instrument for 



drawing parabolas. Phil. Mag., London, 

 (Ser. 6), 7, 1904, (200-201. with 1 pi.). 

 [0080]. 4490 



Peddle, William. On the unitpieness 

 of solution of the linear, differential 

 equation of the second order, Edin- 

 burgh, Proc. Math. Soc, 21, 1903, (73- 

 83). [4850]. 4491 



Pedersen, Lauritz. Nogle Regler for 

 Tal. [Some rules about the sura of the 

 digits.] Kjobenhavn, Ingenioren, 12, 

 1903, (254-254). [0410]. 4492 



Peirce, B[enjamin] O[sgood]. Ou the 

 lines of certain classes of solenoidal or 

 lamellar vectors, synametrical with 

 respect to an axis. Boston, Mass., 

 Proc. Amer. Acad. Arts. Sci., 39, 1903, 

 (293-304). Separate. 24 cm. [0840]. 



4493 



Peirce, George. A curious approxi- 

 mate constiaiction for tt. Xew York, 

 N.Y., Bull. Amer. Math. Soc, (Ser. 2), 

 7, 1901, (426-427). [6810]. 4494 



Pellehn, G. Der Pantograph. Vom 

 Urstorclischnabel zur modernen Zeichen- 

 maschine. 1603-1903. D. MechZtg, 

 Berlin, 1903, (85-90, 93-95, 105-107, 

 113-117, 125-129). [0080]. 4495 



Pellet, A. Sur I'ai^proximation des 

 racines reelles des equations. Paris, 

 Bui. soc. math., 30, 1902, (176-177). 

 [2440]. 4496 



Pemot, F. V. Martin, E. 



Perrin, R. Sur quelqiies consequences 

 geometriques de I'equation different ielle 

 des coniques. Paris, Bui. soc. math., 31, 

 1903, (54-64). [8430]. 4497 



Perry, John. Expansion curves. 

 Nature, London, 68, 1903,(548j. [7610]. 



4498 



A useful empirical for- 

 mula. Nature, I^ndon, 69, 1903, (102). 

 [0090]. 4499 



Pescli, A[di'ianus] J[acobus] van. 

 Sterftetafels voor Nederland afgeleid nit 

 de tienjarige periode 1890-99. Hoofd- 

 stuk HI der inleiding tot de uitkomsten 

 der volkstelling van 31 December 1899. 

 [Tables de mortalite des Pays-Bas pour 

 la periode decennale 1890-99. Chapitre 

 III de la preface aux resultats du 



