sii 
Miscellaneous Intelligence. 291 
The someon ptt neta of Carbonic Acid ; ae 
New s for producing and managing Intens ioe .. SEE 
_Bhosphrie. ‘Acid, ae and Potassium, écpatitdeute a vcblorpteyiy’ En N. Hors- 
ae . me aed discovered Seas of Phosphoric acid; E. N. H 
A Formula for computing the of Axial Rotation of any Primary ‘Planet, 
its Density the Relative Fores of ‘Gr ae 2 ty its ino being given. Commu- 
ee 3 for Ira Wanzer of Lan e, Ct. 
bah, siete bid ‘prodacig 7” the dette fare Hehiok similar to those of 
Lichtenburg: E Wo 
Causes of the Pallas of Lightn ing Rods; J. ee 
Conditions of a Perfect Lightn ing Rod; J. Bus 
“i a ane demonstration of Huclid’s assumption aiatire to Parallels; A. C. 
WIN 
H se results of the discussion of the Boston Dry Dock Tide Observations; 
Wm. FERREL. a 
On the velocity of the oe Current over mee Wires; G. W. Houges. 
On the Total Eclipse of August mach 
Notes on the Ohemitry of Uo 
p jt a 
: n 
The physical theory of the Principal "ot the Lever; W. A. Nok 
5 hi - . ‘ 
$ ad 
Planetary influence on Rainfall and Taiberatare P. E. 
ne use of the Thermometer to determine the Lie of Solar oF Rotation’ "PE. 
(= 
iieabicni on the Theory mb va ba nai of Forces; F. W. BARDWELL. 
Jn the the ereal Medium; 8. D 
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be out 
7 
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eg s 
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By 
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h Photogrphs taken by Wm. Notman. Communicated by B. Epw ARD 
pt iad method of observing contacts at a Solar be crepes by the Spectroscope ; 
uw: 
2 
NG. 
The Spectrum of the Solar Prominences and Corona, as ear? at Burlington, 
Towa, i oy the last Solar Eclipse, and the ger en a bests the bar lines of 
Corona Spectru m and those of the Spectrum of the A fi Boreatia ouNa. 
On the > Oo nservation of Force; H. lala a i rg ie 
emental hae: illustrated by mode 
qomnarkable cas of Freezing Fresh iter gk i Salt ernk: ; W. W. Wuerpen. 
© Thermodynamics of Waterfalls; 
Phil some ermonin evidence of fe existence of a Saye of Arctic Winds; J. H. 
The im mperfect Whiteness of Snow; J. E. OLLIVER. 
The present condition of Hight House Illumination in the U. 8.; JoserH Henry. 
Chemical and Me as a Protection of Life and Property from fire 
sang: Cars; J. F. Boy SOS, 
Law of Accidents; G. A 
a: cee es of Rendering fis ‘Needle of a Galvanometer definitely astatic; 
G. F. 
Smihe pMeanare Electrical Machine, with attached condenser; M. G. FARMER. 
2 a Compou und Telogn raph Wire, referred to the British Association 
se re sistance M. ¢ 
"On Wea aa igs aor inl Holtz Electrical Machine niet for Be: 
analysis of the sibhothies of this variety of machine, and for Class-room 
Rogers, 
oe The Wanxen Force of a mass composed of many RE ron or parts ; 
e ruction of three Maps of Europe, France and N merica, in the 
Gnomonie ‘Projection, ‘oe a view to ne distribntion of Mineral. oT Wealth and the 
Study of the Earth’s figure; F. Fouc 
