Vili CONTENTS. 
e Page 
Professor Hancocx’s Statistics respecting the Sale of Encumbered Estates in 
Treland) ,.:.s-acecmentdyesdsUeileevs waves casaeeedeva ovidt ip Sane ἈΉΡ ΠῚ ὁ ἘΣ 148 
- 5 -ἅ“ δὴ the Cost of obtaining Patents in different Countries...... 149 
---------- on the Causes of Distress at Skull and Skibbereen during 
the, Hamme sn reland. if tsitwesers.casd. ἴδ wed teobessdsocuves see's seen δ δ ἘΜῈ, τὸ τον 149 
Mr. A. ΚΕΙΤῊ Jounsron on the Geographical Distribution of Disease, as indi- 
cating the Connexion between Natural Phenomena and Health and Longevity 150 
Mr. A. Mritwarp’s Remarks on the present Condition of the City and Neigh- 
bourhood of Malaga, and on the Preparation of Raisins.............2cssseseeeeees 151 
Mr. F. G. P. Nerson’s Mortality of the Provident Classes in this Country and 
on the Continent.........scsseeeereneeee ΕΣ ΤῸ Jochen degaueg te δε δ 1} ... 15] 
Colonel θυ ΚΕΒ᾽ 5 Statistics of Criminal and Civil Justice under the Bombay 
Government for the Years 1844, 1845, 1846 and 1847 ...........scesesecceeesees 159 
Dr. CurusBeErT Fincu on the Prevalence and Mortality of Cholera in the Indian 
ἌΡΗ ον sce vaucersseeec erence Sectiacsote canter stators eass ον τονε θεοα ον ἐόν ν ὁ ΣΝ ΕΝ ΤΥ ΜΩΝ 161 
Dr. Joun Srrane on the Progress of Glasgow, in Population, Wealth, = 
Miatatifdc titres pyvQc@s Secnsee ok odes τς ἐξὶς δε τος Ch sdenanccscUhodeuvdes aieesgucbessenenes sees 62 
MECHANICAL SCIENCE. 
Mr. J. G. Appoxtp on a Register Hygrometer for regulating the Atmospheric 
Moisture of Houses .........ccccsescosssccsscoscosrscesssccvecesscesccsceccssssssseseess 170 
Mr. George ΒΕΑΤΤΙΕ on an improved Door Spring ..........secseesseeececeeneneces 170 
Mr. Grorce BucHanan on some proposed Improvements in Valves, Stopcocks 
or Stoppers for regulating the Passage of Fluids, by the Use of Flexible 
Substances .sccccvvecsesdiusvsdarsiventvencsecdeeversccccecssescmsatecce sas nesaapensnvesheaeds 171 
Mr. HomErsuam Cox on the Hyperbolic Law of Elasticity of Cast Iron ...... 172 
Professor Joun DoNALDSON on the Water Sirene ........,csecceseseeceretesessaeeees 174 
Mr. τα Farrpairn on a Wrought Iron Tubular Crane............0+. sesves Lid tl 
Mr. W. S. Jacogp on a Folding Dome for Observatories .........,..eeesereeeeees .... 180 
Mr. Wrixram Lassext on a Method of Supporting a large Speculum, free from 
sensible Flexure, in all Positions .........cceceeececesoncaereetccecccessssesseees ἐπα, 180 
Mr. Witi1am Perrie on the Powers of Minute Vision. Results from Experi- 
ments for determining the best sort of Station-marks, and the errors liable in 
observing with Optical Instruments that measure on the principle of bring- 
ing two reflexions together ....-.s0.ssssessscusceeeessesensneeseseessecsecserecsesseneens 183 
on the Application of Electricity “and Heat as Moving 
Table of the Relative and Absblhike Pawns of Galvanic 
Arrangements, showing the electric current circulated, after the surfaces of 
the elements have been in continued action for several hours, with continuous 
supplies of liquids, the temperature being 70°..+.......ssseseeennseeseereaaersenenes 185 
~--—---——---— on the Dynamic Equivalent of Current Electricity, and 
on a fixed Scale for Electromotive Force in Galvanometry.....++.+..ssessceeeeeee 185 
Mr. M. W. Rurs#ven on Improvements in propelling and navigating Steam 
ΤΡ ΠΥ oomctsle ab atutats Malev ΠΣ os'nieascedaemewaams 186 
Mr. Joun Sire on the Rubble Bridge of Ashiesteel ...........ssseseesseeeceees eee 187 
Professor P1azzi ΜΎΤΗ on a new form of Equatorial Mounting now making 
for the Edinburgh Observatory.....se-reseseces coscsceseeeseecuscseueneeeceseees νου Led 
------- — on a Mode of Cooling the Air of Rooms in Tropical 
Climates costs ose cciaede’ fescensasaaesesacascccadeocoesessosece PRT ry eee . 188 
-  ----- on the Application of Telescope Sights to Rifles ....... 188 
Mr. Tuomas STEVENSON’s Observations on the Force of the Waves ........... 189 
Mr. Wittiam Swan on the Limits to the Velocity of Revolving Lighthouse 
Apparatus caused by the time required for the production of Luminous Im- 
pressions on the Eye ....-..ssceseeseetecere ren asi aelslcaaiaree ais hale at acai »οὐνδὴν τ οσε 101 
Mr. WILuIAM SYKES WARD on a Gas Stove ....cscccsssanecesesceseseesnennavnnnns «ἐς 101 
