January 6, 192 1] 



NATURE 



619 



Rome. 

 Reak Accademia dei Llncei. — (Communications re- 

 ceived during the vacation.) — F. Bottaizl : Striated 

 muscles and ligaments of homoeothermic animals, 

 xiii. Contraction of striated muscle by cold.— G. Fano : 

 Surfaces of the 4th order with infinite discontinuous 

 birational transformation groups, iii. — Ci. Fublni : 

 Contravariant differentials. — M. T. Ambro»etli : Pro- 

 jective determination of a congruence VV'.— U. 

 Bordoni : Isentropic transformations of uni variant 

 systems. — L. Stipa : Projcctively ajjplicable surfaces. — 

 A. Terracini : Spaces tangential to a given variety, i. — 

 1- . Trkomi : li.xpansion of integrals of a differential 

 equation in a series of definite integrals. — W. Del 

 Ref^oo : Variations of electric resistance in nickel- 

 I'l due to heat, i. — G. Canneri : Nitrite of thallium. — 

 >. Cinsa : Salts with o-, i/i-, and ^-quinoid structures, 

 ii. — C. Maizetti : Double ternary systems with lacuna 

 of miscibility in liquid and solid states, i. — G. Hovereto : 

 Erosive action in continuous, as opposed to cyclic, 

 development. — E. Carano : Cy to-embryonic studies in 

 Erigeron. — I.. Beccari : .Vction of adrenalin on the 

 heart.— D. Maestrini ; Studies of enzymes, iv. Emul- 

 'ri, cytasis, ereplasis, and ureasis of germinating 

 rley. — M. BoldrinI : Sexual differences in weight of 

 iin.in body and organs, iii. — E. FedericI : Campaign 

 . .linst .Vnopheles lar\{e bv means of aquatic insects, 

 -G. Fano : Surfaces of the 4th order with birational 

 insformation groups, iv. — G. ArmelUnl : Observa- 

 ■ns on secular comets. The author disagrees with 

 '■ prevailing' opinion that parabolic orbits are neces- 

 rily of stellar origin.— .A. Terracini: Spaces tan- 

 ntial to a given variety, ii. — VV. Del Regno : Varia- 

 '>ns of electric resistance in nickel-steel, ii. — C. 

 MazicttI : Double ternary systems, ii. — M. Padoa : 

 Specific heats. — P. Comncci : Metamorphoses of ron- 

 i't between limestone and granitic porphide in metal- 

 >rous deposits of Oroli, in Sardinia. — S. Sergl : 

 Intercostal muscles and sexual difforonres in respira- 

 !'i>n of the chimpanzee.- G. Quagliariello : Proteid 

 ■I'l residual nitrogen in serum of blood of vertebrates 

 A invertebrates. — E. Federici : Campaign against 

 Mopheles larvae by aquatic insects, ii. This part 

 il-i with the predaceous Coleoptera and Rhynchota. 

 If these the beetles and w.iter-scorpions appear rarely 

 -I select .\nopheles larvae as their prey; on the other 

 ' ind, water-boQtmen are the most voracious 

 siroyers of the mosquito larva?, and water- 



■ asurers also frequently attack them. — L. BlanchI : 

 ijii.idratic character of numbers in a quadratic bodv. 



Ti. Fano : Surfaces of the 4th order with infinite 



. V. — C. de Stefan! : Siliceous fossil sponges of 



i n I.iguria, ii. These sponge remains occur in 



■ • Lower Trias at .Arenzano in guarlzite, in the 

 Ilddle Trias of VoltagRio, in the Triassic limestone 

 ■ .Spoforno, and in a peculiar Triassic formation nt 



overdc. — O. Armclllnl : Determination of latitude of 

 the Capitoline Observatory, i. — E. Federici : Cam- 

 paign against .-Xnopheles larva; bv aquatic insects, iii. 

 .Vfter considering the orders Neuroptera and Pseudo. 

 neuroptera the author, in summarising, concludes that 

 the method is of verv limited efficacv. - M. Cantont : 

 Elastic molecular forces ;md resulting vibrations. — R. 

 SarinI : Theory of the circular-plafe electric con- 

 denser, ii.- -G.' ArMtlllni : I.atitude of the Capitoline 

 Observatory, Ii. The mean values of three series of 

 observations in 1020. viz. 41° 5.V .t'^oj', 33- 17', and 

 .1.1-2S', show fh* variation of latitude due to shifting 

 of the earth'.* axis. — U. Cnidcll ; Oscillatory progres- 

 sive waves of permanent type, second approximation. 

 I. Oaloltl : "Glandular coupling" in larval stomach 

 of \\ann f^rulentn. The organ described under this 

 name by Ruflini in 1800 occurs in the larva of the 

 frog, and was regarded as going to form part of the 

 'landular system of the stomach of the definitive 

 NO. 2671, VOL. 106] 



form. — S. Pastore : .Action of saliva on starch in 

 presence of gastric and pancreatic juices. — O. 

 Mnnerati : Influence of low temperature on germina- 

 tion of freshly gathered corn and other seeds. In 

 confirmation of a result previously found by G. T. 

 Harrington, these experiments showed that at tem- 

 peratures of about .12 C. more than 90 per cent, of 

 the fresh corn and seeds germinated in a few days, 

 whereas at higher temperatures very few began to 

 grow. — .\I. AacoH and G. liar : .Action of serum of 

 pregnancy on placenta extracts. 



Books Received. 



Ministry of Finance, Egypt. Survey of Egypt. 

 Meteorological Report for the Year 1914. Pp. xin- 

 242. (Cairo : Government Press.) P.T. 30. 



The Place-Names of Northumberland and Durham. 

 By Prof. .\. Mawer. Pp. xxxviii-H27i. (Cambridge: 

 At the University Press.) 20s. net. 



The British journal Photographic Almanac and 

 Photographer's Daily Companion, 1921. Pp. 840. 

 (London : H. Greenwood and Co., Ltd.) 2s. net. 



Scientific Life and Works of H. C. Orsted. Edited 

 by K. Meyer. (From H. C.idrsted; Scientific Papers, 

 vol. i.) Pp. clxvi. (Copenhagen : A. F. Host and 

 Son.) 



La Faculte de M6decine de I'Universit^ de Paris. 

 Pp. 84. (Paris : Masson et Cie.) 1 franc. 



Technique des P6troI<», By R. Courau. Pp. 406-1- 

 19 plates. (Paris : O. Doin,) 16 francs. 



Elements of Statistics. By Prof. A. L. Bowley. 

 Fourth edition. Pp. xi-l-459. (London : P. S. King 

 and Son, Ltd. ; New York : C. Scribner's Sons.) 

 24i'. net. 



The Sicientists' Reference Book and Diary, 192 1. 

 (Manchester : J. VVoolley, Sons and Co., Ltd.) 

 3.«. 6d. 



Nedberiagttagelser i Norge utgit av det Norske 

 Meteorologiske Institut. .\argang XXV., 1919. Pp. 

 xii-t-8o-(-45. (Kristiania : H. .\schehoug and Co.) 

 6 kroner. 



Jahrbuch des Norwegischen Meteorologischen Insti- 

 tuts fijr 1919. Pp. xii-t-173. (Kristiania.) 



The Basis of Psychiatry (Psychobiological Medi- 

 cine). By Dr. A. C'. Buckley. Pp. xii-l-447. (Phila^ 

 delphia and London : J. B. Lippincott Co.) 30.S. net. 



.\ulobiography of .\ndre\v Carnegie. Pp. xii-l-38s. 

 (London : Constable and Co., Ltd.) 25s. net. 



.\bnormal Psychology and its Educational .Applica- 

 tions. By F. VVatts. (Published in its first edition as 

 '■ Echo Pi-rsonalities.") Pp. 191. (l^ndon : G. .Allen 

 and Unwin, Ltd.) ys. 6d. net. 



Psychology and Psychotherapy. By Dr. W. Brown. 

 Pp. xi-(-96. (London : E. .Arnold.) 8s. 64. net. 



Marmillan's Historical Atlas of Modern Europe. 

 Edited by Prof. F. J. C. Hearnshaw. Pp. ix-f3o-f- 

 xi maps. (London : Macmillan and Co., Ltd.) 6.<. 

 net. 



The .Mathematical Theory of Electricity and Mag- 

 netism. By Prof. J. H. Jeans. Fourth edition. 

 (Cambridge': .\t the University Press.) 24J. net. 



Studies in Minor Folds. Bv C. E. Decker. Pp. 

 ix-t-8<)-H3 plates. (Chicago: I'niversity of Chicago 

 Press; London: Cambridge University Press.) i.jo 

 <lollars. 



I/Iddal Scientifiaue des Math^maticicns dans 

 r.Antiquifi' et dans les Temps Modernes. Bv Prof. 

 P. Boutroux. Pp. 274. (Paris : F. .Mean.) S francs 

 net. 



The Trees. Shrubs, and Plant* of Virgil. By I. 

 Sargeaunt. Pp. vii+149. (Oxford: B. H. Bl.ick- 

 well.) ds. net. 



Tenth Report of the Development Commissioners 



