INDEX. 
ue 
Haycrart (J. Berry), F.R.S.E. Births of the Eight 
Large Towns of Scotland, 1866-75. Birth-curve 
rises to a Maximum, and then falls once every 
year, 120. Conceptions attain a Maximum 
in July, 121. Elevation of 1° Fahr. causes 
increase of Conceptions of ‘5 per cent., 123. 
Maximum of [Illegitimate Conceptions in 
January, 125. Most Children born 11 months 
after Marriage, 126. Conception follows In- 
semination on an average in three days, 127. 
Law of Capacity dependent on Time of Life, 
Temperature, and Menstrual Rhythm, 128. 
Conception and Temperature Numbers by 
Fourier’s Harmonic Analysis, 131. 
Hepp, Professor, F.R.S.E. On the Mineralogy 
of Scotland. 
Chapter Fifth.—The Micas.—Muscovite, Mar- 
garodite, 10. Black Micas, Phlogopite, 14. 
Lepidomelane, 19. Haughtonite, 21. Altered 
Black Mica, 43. Pihlite, 45. 
Chapter Sixth.—Chloritic Minerals.—Penninite, 
60, including Kammerite, 62. Pseudophite or 
Pyrosclerite, 63, 64. Ripidolite, 65, 66, in- 
cluding Aphrosiderite, 68. Chlorite, 69. 
Chloritoid, 76. Talc-Chlorite, 78. Glauconite, 
79. 
The Saponites.—Delessite, 81. Chlorophzite, 
87. Hullite, 89. Saponite, 91. Celadonite, 
102. 
New Minerals.—Bhreckite, 111. 
See Mineralogy of Scotland. 
Hepatic Stimulants, their Mode of Action, 258. 
Depressants, their Mode of Action, 259. 
Hullite, Analysis of,89. 
Rubislite, 112. 
K 
Kammerite. A Variety of Penninite, 62. Analysis 
of, 63. Optically uniaxial, 63. Elsewhere 
described as Hibbertite, 63. See Heppie 
(Professor). 
Kwort (C. G.), D.Sc, F.R.S.E., and MacGrecor 
(Professor J. G.), D.Sc, F.R.S.E. On the 
Variation with Temperature of the Electrical 
Resistance of Wires of certain Alloys, 599. 
L 
Laneuey (Professor 8. P.). His recent American 
Observations on the Temperature of the Sun’s 
Photospheric Surface, 285. 
Lepidomelane. A Mica of Scotland, 19. Analysis 
of, 21. Slightly biaxial, 21. Scottish Lepido- 
melane, 36. Irish, 36. Action of Fluxes, the 
729 
Blowpipes, and Acids on, 42. See HeppLE 
(Professor). 
| Lepidopleuride. A proposed Suborder of the 
Platysomide, 384. 
Leucoline Series. New Bases of, Part Il. By G. 
Carr Rosinson, F.R.S.E., and W. L. Goopwiy, 
265. Fractional. Distillation of these Bases, 
267. Examination of various Fractions of 
these Bases, 267, 270. Action of Nitric Acid 
- on these Bases, 272. 
Part III.—Action of Iodide of Methyl on Tetra- 
coline, 274. Action of Methyl on Pentacoline, 
275. Action of Methyl on Hexacoline, 276. 
Action of Methyl on Octacoline, 277. Action 
of Strong Nitric Acid on these Bases, 278. 
Liver, Action of Drugs on, 133. 
M 
MacraRLANE (ALEXANDER), D.Sc, F.R.S.E., and 
Prayrarr (P. M.), M.A. On the Disruptive 
Discharge of Electricity, 561. Discharge of 
Electricity through a Paraffin, 561, 564. Dis- 
charge of Electricity through Olive-Oil, 562,565. 
MacGregor (Professor J. G.), D.Sc, F.R.S.E., 
and Knorr (C. G.), D.Sc, F.R.S.E. On the 
Variation with Temperature of the Electrical 
Resistance of Wires of certain Alloys, 599. 
Tron-Gold Alloy, 600. Silver-Platinum Alloy, 
602. Silver-Palladium Alloy, 603. Platinum- 
Iridium Alloys, 605. 
Margarodite. A Mica of Scotland, 10. Analysis 
of, 10. Its Crystalline System is Ortho- 
rhombic, 11. See Heppux (Professor). 
Mesolepis. A genus of the Platysomide, 355. 
Metalliferous Veins, 9. 
Metamorphic Segregation defined, 7, 9. 
Metamorphosism of Geiss, 6, 8. This Metamor- 
phism in Aberdeenshire has taken place in 
three sets of circumstances, 6. 
Methyl (Iodide of). Its action on the Leucoline 
Series, 274. 
Micas of Scotland. Muscovite, Margarodite, Black 
Micas, Phlogopite, 14. Lepidomelane, 19. 
Haughtonite, 21. Altered Black Mica, Ana- 
lysis of, 43. May be intermediate between 
Voigtite and Jollyite, 45. Pihlite, 45. See 
Hepbie (Professor), 
Mitts (Epmunp J.), F.R.S. Researches in Ther- 
mometry, 567. I. Calibration and the Calibra- 
tion Unit, 567. I. The Exposure Correction, 
569. III. Zero Movements, 573 ; Movement of 
the Zero with Time, 573 ; Movement of the Zero 
with Temperature, 578. IV. Poggendorft’s 
Correction, 580. V. Comparison of the Mer- 
