110 
Inhoucl : 
R. t. glazebrook. Double refraction and dispersion in iceland spar: an 
experimental investigation, with a comparison with huyghen’s con- 
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c. schorlemmer. ün the normal paraffins. Part III. 
w. m. hicks. On the motion of two spheres in a fluid. 
w. c. williamson. On the Organization of the fossil plants of the coal- 
measures. Part X. Including an examination of the supposed radiola- 
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w. ellis. On the relation between the diurnal ränge of magnetic decli- 
nation and horizontal force, as observed at the Royal Observatory, 
Greenwich, during the years 1^1 to 1877, and the period of solar 
spot frequency. 
w. spott is wood e. On the sensitive state of vacuum discharges. 
w. de w. abney. On the photographic method of mapping the least 
refrangible end of the solar spectrum. 
w. huggins. On the photographic spectra of stars. 
G. f. fitzgerald. On the electromagnetic theory of the reflection and 
refraction of light. 
g. h. darwin. On the secular changes in the elements of the orbit of 
a satellite revolving about a tidally distorted planet. 
Memoirs of the Boyal Astronomical Society. London 1880. 
Vol. XLV. 4°. 
Inhoud: 
souillart. Theorie analytique des mouvements des satellites de Jupiter. 
w. h. m. chhistie. On the systematic errors of the Greenwich North 
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Monthly notices of the Boyal Astronomical Society. Lon- 
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Proceedings of the Boyal Geographical Society. London 
1881. New Series. Vol. III. N°. 1. 8°. 
Trarisactions of the Linnean Society of London. 1880. 
(Botany) 2 d Series. Vol. I. Part 7 — 9. 4°. 
Inhoud: 
7. w. Phillips. On a new species of Helvella. 
7. 8. 9 ch. babon clarke. A review of the ferns of Northern India. Part 
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9. g. henslow. On the origin of the so-called scorpioid cyme. 
