vill CONTENTS. 
Page 
Rev. W. G. Penny on certain Planetary Perturbations .cssscsesserersscessecsene 27 
Rev. T. R. Rosrnson on Transit Observations of the Moon ............ RTT jake f 
Professor P. Smytu on Lunar Physics....++....04 seiedestcossVecdecsaseoweascevees saeaee > 28 
METEOROLOGY. 
Notice of Meteorological Observations made at Sea. (Communicated by Rear- 
A dita el eG re PAROS) eraeteaes « sacs bbe ecelses Wahl culilsieed sbeclacsons Uavscdeecce feats mere coiccn eae 
Mr. C. Fursroox on the Variation in the Quantity of Rain due to the Moon’s 
Position in reference to the Plane of the Earth’s Orbit ........... disk ceaeeeabares 29 
Professor HENNEssy on Simultaneous Isothermal Lines ............6+ socseceseeeee 29 
on the Distribution of Heat over the Surface of the British 
Tslesis...ses. peeeedee setae sae SAPD AEDT te daitbisle da ctice Mae sad doaNield voi dinaeddocechebe seoees 30 
—_——_—_——__-_——— on the Vertical Currents of the Atmosphere ...... ascesmies 1aO 
Dr. Lxzz on the Discovery of the Asteroid, No. 46, on the 17th of August, 1857, 
by Mr. Pogson, at Oxford...... cadecsnccanstanoesens Sedaeeacy seabesnsseessabene Ssasech stir en 
Rear-Admiral Smyru on the Results of Measurements of y Virginis for the 
" Epoch 1857. (Communicated by Dr. LEE.) ..ccscssserescsscssceneenecnsvenes sees poe 
Professor Loomis on certain Electrical Phenomena in the United States ...... 32 
Mr. J.J. Murpuy’s Account of an instance of Converging Rays seen at Green- 
island, on the Antrim Shore of Belfast Lough, August 13, 1857 .....e.ss0008. 35 
M. t’AsBsé RaiLiarp’s Examination of some Problems of Meteorology. New 
and complete Explanation of the Rainbow .........+0+0+ aasiaiendad secsecveseseeess 3D 
Rev. T. Rankin on Meteorological Phenomena at Huggate, Yorkshire ......... 37 
Mr. Joun Simpson on the Temperature of the Air registered at the ‘ Plover’s’ 
Winter-quarters at Point Barrow, in the years 1852, 1853, 1854.....see...0- seed 
Mr. James THomson on the Grand Currents of Atmospheric Circulation...... 38 
— on the Plasticity of Ice .......++. ccessspdieatlavtiddenennssesdewemetcO 
Mr. D. Vaueuan on Secular Variations in Lunar and Terrestrial Motion from 
chemmbnence lor MidalyAChONees <.caspsunanscdvesdsemssocapaasiacs :saeaavarease eondsesness 40 
— — on the Light of Suns, Meteors, and temporary Stars ...... 42 
CHEMISTRY. 
Professor ©. ANDREWS ON OZONE sss.cesedeeededrvcinoseveonuesnnaecsksstesbiaiwaueusabupeeeie 
on the Heat of Combination of Acids and Bases......... 44 
Professor JAmEs ApsoHN on the Amount of Nitrogen in the Algz ......es0000-. 44 
— on some Compounds of Cyanogen ......... Sesecuduenee 44 
Mr. P. Bucuan on the Composition of the Iron Ores of the Leitrim Coal Field, 
with some Remarks on the Advantages of that District for the Manufacture 
Of Jeon)... mesa ade aaenarewon nse e0iee sseveaceetoeodagescuisenes seweneven'e cveverveveversens 44 
Mr. R. Barnes and Mr, W. Opu1ne on the Condition of Thames Water, as 
affected by London Sewage .........ssseeeeee a aaa dacs pevesoveceeccenssvecvecsoeness 144 
Dr. Cuarxes A. Cameron on Urea as a Direct Source of See to Vege- 
BAUIOT cone sesiosawsnes saceescesrecceaccccens eeereccecees seeeeeeneeese tecceescesccsccsscncsesens 44 
Professor DauBENyY on a Method of Refining Sugar ..........0s..000 sevencecsccsees 40 
on the Conversion of Paper into Parchment.......sssscess0e. 45 
Mr. M. Donovan on Hygrometers and Hygrometry, with a description of a 
New Modification of the Condenser Hygrometer and Hygroscope «sss. 45 
