July 28, 1916] 



SCIENCE 



141 



2. The Sex of Partheno genetic Frogs: Jacques 

 Loeb, Rockefeller Institute for Medical Re- 

 search, New York. 



Two frogs obtained by artificial partheno- 

 genesis, one ten months old the other thirteen 

 months old, were found to be males, and the 

 thesis that animals produced by artificial 

 parthenogenesis are males is thus further cor- 

 roborated. 



3. Be Vriesian Mutation in the Garden Bean, 

 Phaseolus Vulgaris: J. Arthur Harris. 

 The origin of the new race of beans seems 



most logically explained as a case of de 

 Vriesian mutation. In this race the whole 

 morphological organization of the seedling has 

 apparently been changed and the race is char- 

 acterized by a high degree of variability. 



4. Studies of Buctless Glands by the Electrical 

 Method: W. B. Cannon, Laboratory of Physi- 

 ology, Harvard University. 



The nerves distributed to the thyroid cells 

 belong to the sympathetic and not to the vagus 

 supply, and their effects are not indirect 

 through alterations of blood flow. They are 

 true secretory nerves. 



5. The Bistribution of the Chondriosomes to 

 the Spermatozoa in Scorpions: Edmund J3. 

 Wilson, Department of Zoology, Columbia 

 University. 



The chondriosome-material having the same 

 origin, fate and (presumably) physiological 

 significance may be distributed to the- germ- 

 cells by processes widely different even in 

 nearly related animals. In one of the scor- 

 pions the distribution is effected by a definite 

 process of division, in the other by an opera- 

 tion that has at least the aspect of a hit-or- 

 miss segregation, and one that gives only an 

 approximate equality of result. 



6. New Bata on the Archeology of Venezuela: 

 Herbert J. Spinden, American Museum of 

 Natural History, New York. 



Stone implements, including celts, pestles, 

 etc., vessels and figurines of clay with painted 

 and modeled decorations, personal ornaments 

 of shell, nephrite, jet, and serpentine, as well 

 as the petroglyphs and pictographs, occur in 

 considerable quantity. The plastic art of 



Venezuela is one and the same with the 

 " archaic art " already known in Central 

 America and Mexico. 



7. Note on the Phosphorescence of Uranyl 

 Salts: Edward L. Nichols, Department of 

 Physics, Cornell University. 



Eor the only examples of luminescence which 

 admit of detailed inspection, the spectrum of 

 phosphorescence is identical with that of 

 fluorescence and it is suggested that this also 

 applies to all phosphorescent materials. In 

 spite of its great complexity, the luminescence 

 spectrum of a uranyl salt is to be regarded as 

 a unit, all its components decaying at the same 

 rate after the cessation of excitation. 



8. The Pyranometer : An Instrument for Meas- 

 uring Shy Radiation: C. G. Abbot and L. B. 

 Aldrich, Astrophysical Observatory, Smith- 

 sonian Institution. 



Two satisfactory types of this instrument, 

 both derived in principle from the electrical 

 compensation radiation instruments of the late 

 K. Angstrom, have been devised. Numerous 

 observations of the sky-radiation have been 

 made. On fine days the sky-radiation alone 

 received on a horizontal surface ranges from 

 0.07 to 0.13 calories per square centimeter per 

 minute. 



9. Note on Lucas' Theorem : M. B. Porter, De- 

 partment of Mathematics, University of 

 Texas. 



A more general result than that obtained by 

 Borel or Polya has been found. 



10. A Variable System of Sevens on Two 

 Twisted Cubic Curves: H. S. White, De- 

 partment of Mathematics, Vassar College. 



11. The Neuromuscular Structure of Sea- 

 Anemones: G. H. Parker and E. G. Titus, 

 Zological Laboratory, Museum of Compara- 

 tive Zoology, Harvard College. 



There are four types of muscle action; they 

 are of phylogenetic significance, and show that 

 the neuromuscular mechanism of sea-anemones 

 is by no means so simple as originally supposed. 



12. Change of the Ionization of Salts in Alco- 

 holic Solvents with the Concentration: 

 Frederick G. Keyes and W. J. Winning- 

 hoff, Research Laboratory of Physical 



