Miscellaneous Intelligence. 481 



ash contained in 100 parts P 2 5 3-34, S0 3 2-50, Si0 2 1*32, CI 0-66, 

 Fe 2 3 0-26, Mn0 2 1-73, MgO 16-59, CaO 10-99, K 2 27'02, Na 2 

 0*47. The Mate or Brazilian Holly (Ilex Paraguayensis), accord- 

 ing to Peckolt, affords from its dried leaves 0-639 per cent of caf- 

 feine ; but the ash contained affords (as analyzed by Arate) only 

 2-98 of K 2 0, with Na 2 7-28, P 2 B 5-54, Si0 2 44-75, CI 0-71, SO a 

 0-92, Fe 2 3 3-41, Mn0 2 2-50, MgO 11-39, CaO 12-34. 



2. Report on the work of the International Geological Con- 

 gress. — Dr. Frazer states to the Editor of this Journal that in his 

 report, noticed on page 403, there are two typographical errors : 

 on page 41, 16th line, Bergakademic should be Bergakademie • 

 and page 44, 2d line, J 2 should be J ?. 



3. National Academy of Sciences. — The following are the 

 titles of the papers entered to be read before the Academy at 

 the session of April, 1886, at Washington : 



H. A. Newton: The Comet of Biela. 



H. A. Rowland : On the absolute and relative wave lengths of the lines of 

 the Solar Spectrum. 



Ira Remsen : Influence of Magnetism on Chemical Action. 



"Wolcott G-ibbs: Platinous compounds as additive molecules. 



S. P. Langlet : On the Invisible Spectra. 



A. W. Wright: Crystallization of Platinum by means of the electric discharge 

 in vacuo; — -Effect of Magnetization on the Electrical resistance of metals. 



A. M. Mater: On the diathermancy of Ebonite and Obsidian, and on the pro- 

 duction of CaJorescence by means of Screens of Ebonite and Obsidian; — On the 

 Coefficient of Expansion of Ebonite ; — On the determination of the Cubical Ex- 

 pansion of a solid" by a method which does not require calibration of vessels, 

 weighings or linear measure ; — On measures of absolute Radiation. 



Ogden N. Rood : On color contrast. 



R. E. Peart, U. S. N. : On a proposed Expedition into the interior of Green- 

 land during the present summer with Disco as a base. (By invitation.) 



Elias Looms: Areas of High Barometric Pressure over Europe and Asia. 



G-. K. Gilbert: The Geologic Age of the Equus Fauna. 



T. Sterrt Hunt : The Cowles Electrial Eurnace. 



G. F. Becker: Cretaceous metamorphic rocks of California. (By invitation.) 



Chas. D. Walcott: Classification of the Cambrian System of North America. 

 (By invitation.) 



E. D. Cope: On the Geology of the region near Zacualtipan, Hidalgo, Mexico;, 

 — On the Phylogeny of the Batrachia; — On the Phylogeny of the Placental 

 Mammalia. 



S. H. Scudder: The Cockroach in the past and in the present. 



Theo. Gill : The ordinal and super-ordinal groups of Fishes. 



"W. K. Brooks: The Stomatopoda of the " Challenger" collection; — Budding in 

 the Tunicata. 



Edward S. Morse: On ancient and modern methods of arrow release. 



Alexander Graham Bell: Upon the Deaf and Dumb of Martha's Vineyard 

 (continuation of Research relating to the ancestry of the Deaf). 



4. The Library of the late Professor G-uyot is offered for sale 

 by Mr. E. Sandoz, of Princeton, N. J. It is rich in works in the 

 departments of General and Physical Geography, and in scientific 

 publications of all kinds, including maps. The number of vol- 

 is about 4000, and of pamphlets and periodicals about 3000. The 

 price per volume is 11.20, and for the pamphlets and periodicals 

 10 cents each. 



5. 8. W. Ford's article, p. 466, fig. 1 is enlarged 5 times, and 

 fig. 2, nearly 3. 



