998 



Porro 



Portevin. 



ciaz. delle sostanze disciolte nelle acque mine- 

 rali, I & II, 60 S. (33, 1922). 



Borna, Llncei, Kend. : Contributo alla co- 

 noscenza del 2. spettro dell' B.^), 10 & 8 S.*). — 

 Concentraz. dell' emanaz. radioattiva dei gas 

 dei soffioni boraciferi mediante il carbone a 

 bassa temp.^), 3 S.*). — Sul tufo radioattivo di 

 liuggi-Gas occIusi-Contenuto in Ra & U^), 5 S. 

 (20, 1911)*). — Nuovi studi sui gas dei soffioni 

 boraciferi di Larderello^), 5 S.*). — Contributo 

 alla conescenza dello spettro a bände del Sil 4 

 (m. V. Squintani), 5 S.*). — Lo spettro a righe 

 deir Nin tubo di Geissler, 4 & 4 S.(20, 1911)*). 



— Contributo allo studio dell' az. di alcuni 

 acidi Organ, nella scomposiz. di HjOj^), 8 S. 

 (22, 13). — Solfato ammonico-magnesiaco 

 (cerbolite). I: Solubilitä, curva ghiaccio & 

 punto crioidratico, 9 S. (23, 14). 



Mit *) G. Norzi. — *) auch in Gazz. chim. ital. 



Siehe L. Marino & R. Nasini. 



IV Porro, Francesco, Dr. phys. 1882 



Pavia; 1905—10 Prof., Observ. astron. 



nacion., La Plata, seit 11 Prof., Astron., 



Univ., Genua; * 1861, Mai 5, Cremona. 



Trattato di astron., I, XIX + 427 S., Bologna 

 1921. 



Mllano, Istit. Lomb. Rend.: Stabilitä dei 

 sistemi secondarii perturbati dal sole, 6 S. 

 (51, 1918). 



Ferner Aufs, in Publ. del R. Osserv. di Mi- 

 lano, Atti della R. Ac. delle Sei. di Torino, Ren- 

 dic. del R. Ist. Lomb., Astron. Nachr., Viertel- 

 jahrsschr. d. Astr. Ges. 



Porter, Alfred William, D. Sc. 1914 

 Melbourne; stud. 1885 — 90 Liverpool & 

 London; Prof., Phys., Univ., London; 

 * 1863, Nov. 12, Birkenhead. (Eig. Mitt.) 



Mitarbeiter b. d. Hrsg. d. Journ. of Scient. 

 Instruments, England. 



An intermediate course of mechanics, 430 S., 

 London 1905. — Presidential address of the 

 Röntgen Society, 14. — In Dictionary, Applied 

 Physics: Thermal expans. 



Faraday Soc. : Latent heat of dilut. & von 

 Babos law (1915). — On Gibbs' adsorpt. coef- 

 ficient (17). — The thermal properties of sul- 

 phuric acid & oleum (18). — On the equat. for 

 the chemical equilibrium of homogenous mix- 

 tures (19). — On the vapour pressures of mix- 

 tures (20). — Generat. & utilisat. of cold (22). 



— The law of distribut. of particles in colloidal 

 suspens.i) (22 & 23). 



London, Roy. Soc. Proc. : The osmotic pres- 

 sure of compressible soluts. of any degree of 

 concentrat., 10 S. (79, 1907) (auch in Physik. 

 Zeitschr.). — Cases in which both solvent & 

 solute are volatile, 9 S. (80, 08). — An invers. 

 point for liquid COg in regard to the Joule- 

 Thomson effect, 2 S. (89, 13/14). 



Phil. Mag.: The diffract. images formed by 

 a plane diffract. -grating, 5 S. (8, 1904). — The 

 invers.-points for a fluid passing through a 

 porous plug, 14 S. (11, 06). — The isopiestic 

 temp. of saturated vapours of different sub- 

 stances, 3 S. (13, 07). — The effect of the po- 

 sit. of the grating (or prism) upon the resolving 



?Dwer of the spectroscope, 3 S. (15, 08). — 

 he invers.-points for a fluid passing through a 

 porous plug. II: Examinat. of experimentaldata, 

 9 S. (19, 10). — The lagging of pipes & wires: 

 w. an addendum (m. E. R. Martin), 11 S. (20, 

 10). — The viscosity of liquids, 4 S. (23, 12). — 



The format. of images by means of an opaque 

 disk, 2 S. (27, 14). — The variat. of the triple- 

 point of a subst. w. hydrostatic pressure, 7 S. 

 (29, 15). — The fundamental law for the true 

 Photographie rendering of contrast (m. R. 

 E. Slade), 10 & 2 S. (38, 19). — On the spe- 

 cific heat of saturated vapours & entropy-temp. 

 diagrams of fluids, 2 S. (40, 20). — On Systems 

 w. propagated coupling^), 9 S. (41, 21). — The 

 law of distribut. of particlesincoUoidal suspens., 

 w. special reference to Perrin's investigats. i), 

 11 S. — On the theory of freezing mixtures^), 

 6 S. — On a revised equat. of state, 4 S. (44, 22). 



Physik. Zeitschr.: D. osmot. Druck kom- 

 pressibler Lösgn. v. belieb. Konzentrat., 6 S. 

 (9, 1908). 



Phys. Soc: On an anomaly in the lagging 

 of thin wires & narrow pipes (1908). — Eddies 

 in air (m. H. Nisi). — Change of thermal con- 

 ductivity with fusion (m. F. Simeon) (15). 



Mit ») J. J. Hedges, «) R. E. Gibbs. 



Siehe G. C, Foster. 



IV Porter, Milton Brockett, Ph. D. 

 1897 Cambridge, Mass.; 1901 Assist. 

 Prof., Math., Univ., New Haven, Conn., 

 seit 02 Prof., Math., Univ., Austin; 

 * 1869, Nov. 22, Sherman, Texas. 



Amer. Math. Monthly: The deriv. of the 

 logarithm., 3 S. (23, 1916). 



Amer. Math. Soc. Bull. : Concerning abso- 

 lutely continuous functs., 3 S. (22, 1915/16). — 

 Derivativeless continuous functs., 5 S. (25, 

 18/19). — A two-way infinite series for Lebesgue 

 Integrals, 4 S. (28, 22). 



Ann. of Math. Harvard Coli.: On functs. de- 

 fined by an infinite series of analytic functs. of 

 a complex variable, 4 S. — Concerning series 

 of analytic functs., 3 S. (6, 1904/05). — Con- 

 cerning Green's theorem & the Cauchy-Rie- 

 mann differential equats., 2 S. (7, 05/06). — 

 A criterion of Pringsheim's for expansibility 

 in Taylor's series, 4 S. — The polynomial con- 

 vergents of a power series, 4 S. (8, 06/07). 



Portevin, A.; französ. Chemiker. 



Paris, Acad. C. R. : L'equilibre du syst. Ni- 

 Bi, 2 S. (145, 1907). — L. aciers au Cr, 3 S. 

 (153, 11). — Effet de la trempe sur la r^sistance 

 electr. d. bronzes & d. laitons, 2 S. (155, 12). — 

 La limite elast. d. alliages, 4 S. (156, 13). — 

 fiquilibre de carburat. d. aciers dans 1. melanges 

 fondus de KCl & de KCy, 3 S. (158, 14). — 

 La vitesse de transformat. d. aciers ä l'echauf- 

 fem. & la resist. electr. spöcifique du Fe, 2 S. 

 (159, 14). — L'anisotropie mecan. d. metaux 

 & alliages a gros grains & l'essai k la bille, 3 C. 

 (160, 15). — La decomposit. du cyanade de 

 K par la chaleur, 2 S. (161, 15). — Influence de 

 la vitesse de refroidissem. sur la temp. de trans- 

 format. & la structure d. aciers au C^), 4 S. 

 (164, 17). — L. aciers au Mn, 4 S. — La carbu- 

 rat. du Fe par les cyanures & cyanates alcalins, 

 3 S. (165, 17). — Efforts internes developpes 

 dans 1. metaux & alliages par l'effet d'un re- 

 froidissem. rapide, 3 S. — Comparaison entre 

 l'equilibre elast. interne d. alliages apres trempe 

 & apres ecrouissage par etirage a froid, 3 S. 

 (167, 18). — Influence de divers facteurs sur 

 la vitesse critique de trempe d. aciers au C, 3 S. 



— La format. de la troostite a hasse temp. dans 

 1. aciers au C & l'influence de la temp. d'emers. 

 dans 1. trempes interrompues^), 3 S. (168, 19). 



— Cert. cassures defectueuses d. eprouvettes 

 de tract. pr6Iev6es en travers dans l'acier, 3 S. 



