HENRY SOTHEKAN & CO., 140, STRAND, W.C, JCsXi isf pVcCADltt-V; W. 429 



8410 GILL (Sir David, f.r.s. ; Cape Astronomer Royal) Cata-ldgve of 1713 St^^s, fof thq Equinox 

 1885-0, from Observations at the Royal Observatory, Capfe of ,6pod rf(HVB/IS7g55;wi5ih Append- 

 ixes : Catalogue of 104 Southern Circumpolar Stars, and separate* (^bsefvations of (3, a^ and ai 

 Centauri, impl. 4to. cl., 5s 1894 



8411 Catalogue of 3007 Stars, for the Equinox 18900, from Observations at the Royal 



Observatory, Cape of Good Hope, 1885-95, with Appendixes : Comparison with other Catalogues, 

 Meridian Observations of a (fanis Majoris, a Cants Minoris, j3 Centauri, a* and a? Centauri, and 

 Positions of Southern Circumpolar Stars, impl. 4to. d., 7s 1898 



8412 Catalogue of 8560 Astrographic Standard Stars between Declinations -40" and 



- 52° for 1900, from Observations at the Royal Observatory, Cape of Good Hope, 1896-9, with 

 Appendixes, roy. 4to. cl., Is Qd 1906 



8413 Catalogue of 2798 Zodiacal Stars for the Epoch 1900, arranged for Differential 



Observations of the Planets, roy. 8vo. sewn, \s 6d 1899 



8414 Heliometer Observations for Determination of Stellar Parallax at the Royal 



Observatory, Cape of Good Hope, large 8vo. cL, 3s 1893 



8415 Report on the Geodetic Survey of South Africa, Vols. I— III and V (all published), 



unth numerous folding plates, and other illustrations, 4 vols, folio, original hf. roan {one v. cl.) ; 

 SCARCE, £2. 10* Cape Town, 1896-1901-5— Zonrfow, 1908 



Contents:— I. Geodetic Survey executed by Lt.-Col. Morris, r.e., 1883-92, with Rediscussion of the Survey executed by 

 Sir Thomas Maclear, f.r.s., 1841-8 : II. Report on a Rediscussion of Bailey'saiid Fourcarde's Surveys, and their Reduction 



to the System of the Geodetic Survey: III. on the Geodetic Survey of Part of Southern Rhodesia, executed by 



Alexander Siinms : V. Reports on the Geodetic Survey of the Transvaal and Orange River Colony, executed by Col. Sir 

 W. G. Morris, and of its Connexion, by Capt. H. W. Gordon, r.e., with the Geodetic Survey of Southern Rhodesia. 



'Sir David Gill's grandiose scheme for uniting two hemispheres by a continuous network of triangulation.'— If iss 

 Agnes if. Gierke. 



8416 Volume I : Report on the Geodetic Survey of South Africa, executed by Col. 



[Sir W. G.] Morris, 1883-92, with Rediscussion of the Survey executed by Sir Thomas 

 Maclear, f.R.S., 1841-8, with 22 plates and plans (mostly foldiiig), and diagrams, folio, sewn, 

 125 %d Cape Town, 1896 



8417 Volume II : on a Rediscussion of Bailey's and Fourcarde's Surveys, and 



their Reduction to the System of the Geodetic Survey, with diagrams, folio, hf. roan, 8* %d 



ibidem, 1901 



8418 Volume III: on the Geodetic Survey of Part of Southern Rhodesia, executed 



by Alexander SiMMS, Government Surveyor, m^A/oZrfm^r/^^a^e, and diagrams, folio, hf. roan 

 (scarce), £1. 10s %b., 1905 



8419 Report on the Boundary Survey between British Bechuanaland and German 



South West Africa, executed by Lt.-Col. Laffan, Lt. Wettstein and Oberlt. Doering 

 [in English and German], with 2 folding plates, and diagrams, folio, sewn, Qs %d Berlin, 1906 



8420 Results of Meridian Observations of Stars at the Royal Observatory, Cape of 



GrOOD Hope, complete from 1855 to 1904, with Appendix to 1890-1, 8 vols. roy. 4to. cl., £1. 15* 



1894— ^rftn., 1906 



8421 during 1861-70, 77-9, and '82-5, 5 thick vols. roy. 8vo. c/., 18* M 



lS87—Edin., 1901 



8422 during 1866 to 1870, under the Direction of Sir Thomas Maclear, f.r.s., thick 



roy. 8vo. cl., 4s 6d Edin., 1900 



8423 during 1877, under the Direction of E. J. Stone, f.r.s., roy. 8vo. d., 4* (p. 10*6rf) 



ib., 1901 



8424 during 1878-9, under the Direction of E. J. Stone, f.r.s., roy. 8vo. d., 6s (p. \2s%d) 



ib., 1901 



8425 during 1896-7, roy. 4to. cl., 6s (p. 155) ib., 1901 



8426 during 1900-4, roy. 4to. cl., &s (p. 15s) ib., 1906 



8427 , and William Lewis ELKIN ; Yale Observatory : Heliometer-Determinations of 



Stellar Parallax in the Southern Hemisphere, with 4 plates {3 folding), 4to. sewn, 5s 6d 1884 



' To A. M. W. Dovming, Esq. [F.iJ.S.] with kind regards from David GUl.'—Jnscr. on flyleaf. 



8428 , and Jacobus Cornelius KAPTEYN; Univ. Groningen: The Cape Photographic 



Durchmusterung for the Equinox 1875, with plates and woodcuts, 3 thick vols. hf. calf, with 

 the Bevision, with diagrams, 3 parts in 1 vol. cl.— in all 4 vols. roy. 4to., £2. 5* (p. £6. 5*) 



1896— Edin., 1903 



The completion of Argelander's ' Bonner Durchmusterung '. ' It placed at the disposal of astronomers a photographic 

 census of the heavens fuller and surer than the corresponding visual enumeration executed at Bonn. It includes 454,875 

 stars, nearly to the 10th magnitude, and their positions are reliable to about one second of arc.'— Miss Agnes M. CUrke. 



8429 GILL (J., F.R.A.S.) Text-Book on Navigation and Nautical Astronomy, unth front, 

 and 212 illustrations, 8vo. cl., 4s (p. 10s %d) 1898 



8430 GILL (Joseph ; c.E.) Essay on the Thermo-Dynamics of Elastic Fluids, with 6 woodcuts, 

 8vo. sewn, with auto, of Sir E. Frankland, F.R.S. , 5s 1860-1 



An attempt to prove the fallacy of the principle of the conservation of energy. 



8431 GILL (Thomas, patent agent) Technical Repository ; containing Practical Information on 

 Discoveries and Improvements in Useful Arts, from the beginning in 1822 to 1830, unth numerous 

 copperplates {many folding), 17 vols. 8vo. old crimson hf morocco gilt {nice set), unth bookplate of 

 Henry B. H. Beavfoy, F.k.S. {rare), £1. 5s 1822-30 



Including First Series, 10 vols., and Second Series (Technological and Microscopic Repository), 7 toIs. 



8432 GILLY (David), \ind Johann Albert EYTELWEIN : Praktische Anweisung zur 

 Wasserbaukunst, I. Heft: Von den Pfiihlen, den Rammen und den Fangdammen, 2. ver- 

 mehrte Auflage ; with \4 folding copperplates, 4to. boards^ 4s Berlin, 1809 



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