886 
Machines Compounded, 28. Reduplication of Cords, 
29. Loaded Dynamic Frame without Friction, 29. 
Loaded Dynamic Frame with Friction, 31. Applica- 
tion of the Method to an Ordinary Horizontal Single- 
acting Steam Engine, 32. Loaded Dynamic Frame 
when neither e nor f are attached to the extremities 
of other members of the Machine, 34. 
Part IJ.—The Horizontal Steam Engine, 703. 
Appendix to Part IJ1.—On the Application of Graphic 
Methods to the Determination of the Efficiency of 
Machinery, 711. 
JENKIN (Professor Fiummine) and Ewine (J. A.), B.Sc. 
On the Harmonic Analysis of certain Vowel Sounds, 
745-777. 
K 
Used to indicate the number of knots of lower 
See 
Knotfulness. 
orders of which a given knot is composed, 177. 
Tart (Professor P. G.). 
Knots, 145, See Tarr (Professor P. G.). 
Kwyorr (C. G.) and MacGrucor (J. G.). On the Thermo- 
Electric Properties of Charcoal and certain Alloys, with 
a Supplementary Thermo-Electric Diagram, 321.—I. 
Charcoal, 323; Table I., 324; Table II., 325. II. Alloys 
—Silver-Palladium Alloys, 328. (1) Alloy of which 
20 per cent. is Palladium, 329. (2) Alloy of which 
25 per cent. is Palladium, 330. Platinum-Iridium 
Alloys,331. (1) Alloy 6 per cent. of which is Iridium, 332. 
(2) Alloy containing 10 per cent. of Iridium, 332. (3) 
Alloy containing 15 per cent. of Iridium, 334, (4) Alloy 
containing 20 per cent. of Iridium, 334. Iron-Gold 
Alloy, 335. Platinum-Silver Alloy, 337. Magnesium- 
Thallium Alloy, 339. 
L 
Labradorite, 256, 257. See Huppin (Professor M. F.). 
Latrobite, 262. See Hepp (Professor M. F.). 
Letts (Dr E. A.) and Professor Crum Brown. On 
Dimethyl-Thetine and its Derivatives, 571-582. See 
Brown (Professor Crum). 
-— On theCompounds of Ethyl1-, Propyl]-, Butyl-,and Amyl- 
Thetines, 583. Ethyl-Thetine Lead Salt, 584. Hydro- 
chlorate of Diethyl-Thetine, 585. Sulphate of Diethyl- 
Thetine, 585. Diethyl-Thetine Base, 586. Hydro- 
chlorate of Dipropyl-Thetine, 586. Action of Hydro- 
bromate of Dipropyl-Thetine on Carbonate and Hydrate 
of Lead, 587. Hydrobromate of Di-isobutyl-Thetine, 
588. Hydrobromate of Diamyl-Thetine, 589. 
— Action of Heat on Compounds of Dimethyl-Thetine, 
591. Action of Heat on Sulphate of Dimethyl-Thetine, 
597. Action of Heat on Hydrate of Dimethyl-Thetine, 
598. 
—— On the Action of Oxidising Agents on Compounds of 
Dimethyl-Thetine, 601. Action of Fuming and Dilute 
Nitric Acid on Hydrobromate of Dimethyl-Thetine, 
603, 604, Action of Permanganate of Potash on 
Dimethyl-Thetine (base), 605. 
Action of Alcohol on Hydrobromate of Dimethyl- 
Thetine, 607. ; 


INDEX. 
Letts (Dr E. A.) and Professor Ckum Brown. Action of 
Hydrocarbon Sulphides on Bromacetic Acids, 612. 
Action of Sulphide of Albyl on Bromacetie Acid, 614. 
— Action of Iodacetic and of Bromacetic Ethyl Ether on 
Sulphide of Methyl, 618. Chloro-Platinate of Ethyl- 
Bromate of Dimethyl-Thetine, 623. 
Leucoline Series. On some new Bases of the Leucoline Series, 
561. See Ropryson (G. Carr), 561. 
Linkage, 168. See Tarr (Professor P. G.) 
Liquids. On a method of Determining the Cohesion of 
Liquids, 697. 
Liquid Dielectrics. On the Disruptive Discharge of Elec- 
tricity through Liquid Dielectrics, 679. See Mac- 
FARLANE (Dr Alex.) 
Lochaber. Additional Memoir on the Parallel Roads of 
Lochaber. By Davip Mitnze Homes, LL.D., 93. 
Locking defined, 182. See Tarr (Professor P. G.). 
M 
MacFraRLANE (Dr ALEXANDER), M.A. On the Disruptive 
Discharge of Electricity, 633. Measurement of the 
Difference of Potential required to pass a Spark through 
Air at the Atmospheric Pressure between Parallel Metal 
Plates at different distances, 637. Measurement of the 
difference of Potential required to produce the same 
length of Spark at different pressures of the Dielectric, 
642. The Electric Strength of different Gases, 643. 
Measurement of the difference of Potential required to 
pass a Spark between two Spherical Balls at different 
distances, 644. Tables 1X XIL., 645-671. 
and Sruupson (R. J. §.). On the Discharge of Elec- 
tricity through Oil of Turpentine, 673. Relative 
Difference of Potential required to produce a single 
Spark. Electrodes Disc and Plate, 676. Relative 
Difference of Potential required to produce a con- 
tinued Discharge, 676. 
and Puayratr (P. M.). On the Disruptive Discharge 
of Electricity through Liquid Dielectrics, 679. Measure- 
ment of the Difference of Potential reyuired to pass a 
Spark through a Liquid Dielectric at the Atmospheric 
Pressure between Parallel Metal Plates at different 
distances, 680. Effect of Heating the Electrodes upon 
the Passage of the Electric Spark, 681. Measurement 
of the difference of Potential required to pass a Spark 
through Air at different Temperatures, the Pressure 
being constant, 684. 
MacGrucor VJ. G.). See Knorr (C. G.). 
Machines. Complete Machines, 5. Simple Machines, 16. 
Compound Machines, 26. Half Machines Compounded, 
28. See JENKIN (Professor FLEEMING). 
Magnetometer. Note on the Bifilar Magnetometer. By J. A. 
Brown, F.R.S. 
MarspEn (R. Sypnzy), B.Sc., and Dr R. M. Morrison. On 
the Preparation and Properties of Pure Graphitoid and 
Adamantine Boron, 689. 
Microphone. An Account of some Experiments on the Tele- 
phone and Microphone. By Jamus Buiyru, M.A, 
557. 



