Miscellaneous Intelligence. 325 



W. Harkness: On the flexure of transit instruments. 



G-. W. Hough : Description of a printing chronograph. 



J. Burkitt Webb : Polar versus other coordinates. 



J. Haywood : The visible shadow of the earth. 



S. P. Langley : Spectra of some sources of invisible radiation, and on the recog- 

 nition of hitherto unmeasured wave-lengths. 



J. A. Brasheab: A practical method for working rock-salt surfaces for optical 

 purposes. 



J. W. Moore : The direct optical projection of electro-dynamic " lines of force ;" 

 The optical projection of electro-dynamic phenomena. 



H. S. Carhart: On surface transmission of electrical discharges. 



E. L. Nichols : A spectro-photometric analysis of the color of the sky ; Chemi- 

 cal behavior of iron in the magnetic field. 



H. B. Alvord : Telemetric aid to meteorological records. 



W. Ferrel; Psychrometry. 



C. H. Chandler: A new harmonograph. 



T. P. Jewell : Apparent resistance of a body of air to a change of form under 

 sudden compression. 



H. W. Eaton: The relation of vanishing and permanent magnetism. 



T. C. Mendenhall : Note on electrometers and atmospheric electricity. 



A. E. Dolbear: On the contact theory of electricity; On an incandescent elec- 

 tric lamp for projection; On a new galvanic element. 



A. J. Rogers: Electrolysis of salt of the alkalies and alkaline earths. 



C. K. "Wead: Exhibition of a combined spectro-photpmeter and ophthalmo- 

 spectroscope. 



C. J. Reed : Exhibition of an apparatus for demonstrating the laws of falling 

 bodies. 



C. H. Rockwell : Some practical results in determining time and latitude with 

 the almucantar. 



H. H. Clayton: "Weather changes of long period. 



T. Bassnett : Parallax of the sun. 



S. S. Haight : Rapidity of calculation. 



2. Chemistry. 



T. Taylor: On the crystals of butter and other fats. 



A. B. Prescott : Control analyses, and limits of recovery in chemical separations. 



E. D. Campbell: A colorimetric method for the estimation of phosphorus in 

 iron and steel. 



W. A. Noyes: On para-nitro-benzoic-sulphinide. 



TV. H. Wiley: Estimation of acetic acid occurring with lactic acid in sour milk 

 or kumys ; Composition of kumys made from cow's milk; Honey and its adultera- 

 tions. 



E. H. Cowles, A. H. Cowles and C. P. Mabery : On the electrical furnace and 

 the reduction of the oxides of boron, silicon, aluminium and other metals by carbon. 



W. A. Withers: Chemical conversion scales. 



H. B. Battle and P. B. Dancy: Consideration of the atomic weights of some- 

 of the elements found in agricultural analysis, and their application to conversion 

 tables to facilitate calculation. 



Note on the estimation of water in glucoses, honeys, etc. 



Helen C. DeS. Abbott : A chemical study of Yucca angustifolia. 



A. V. E. Young: Thermo-chemical analysis of the reaction between potassic 

 hydrate and common alum. 



P. P. Dunnington : A sponge-like mass containing titanic acid ; A simple 

 method of fixing crayon drawings on paper. 



J. W. Langley : On the concentration of certain acid radicles by the differen- 

 tial action of chemism. 



0. C. Johnson: Negative bonds and rule for balancing equations. 



J. W. Pike : Chemical and thermo-chemical relations of the gases of the atmos- 

 phere in the disintegration and metamorphism of rocks. 



C. J. Reed : Graphical representation of the relation between valence and Men- 

 delejeff's periodic law. 



