182 HENRY SOTHERAN & CO., 140, STRAND, W.C, AND 37, PICCADILLY, W. 



3609 PHYSICAL LABORATORIES (The) of the University of Manchester : a Record of 25 

 Years' Work, with portrait of Prof. Arthur Schuster, FM.S., 9 plates, and 4: folding plans, 8vo. 

 cl., 3s (p. OS nett) Manchester, 1906 



A FINE SET : 



3610 SOCIETY of LONDON, Publications of the, complete from their beginning 



in 1874 to 1901 (as bslow), with numerous foldinj plates and woodcuts, 20 vols, and 

 4 parts, roy. 8vo., 14 vv. hf. green moroco gilt, uncut, t. e. g., 2 vv. hf. calf gilt, and the 

 rest sewn as issued, £11. lis 1874-1901 



Contents :— Proceedinos, 17 v., 1S74-1901 : Abstracts, 3 v., '95-1900: Physical Mkmoirs, etc., 4 parts, '88-94. 



3511 Another Set, from 1884 to 1905 (vv. 5-19), with the Abstracts, with 



numerous folding plates and woodcuts, 14 vols. roy. 8vo. hf. brow7i morocco gilt, cl. sides, 

 £8. 8s * 1884-1905 



3612 PIAZZI (Giuseppe; Ord. Theat, Palermo) Pr^cipuarum Stellarum Inerrantium Posi- 

 tiones MjedI/E, ineunte Saeculo XIX., ex Observationibus habitis in Specula Panormitana, 

 1792-1813, 4to. sewn, £3. Panormi, 1814 [Facsimile Reprint of Berlin, 190.3] 



' This great work is justly considered to be one of the most important that has ever b en executt'd by a single individual. 

 Every star was observed several times, and a mean of all the results taken as the final place of the star. Moreover, the 

 table of refractions employed by Piazzi in reducing the stars to their mean places, was deduced by himself exclusively from 

 his own ob.servations. From the circumstance of its being at once so extensive, so accurate, and so independent in its con- 

 struction, this catalogue has formed the groundwork of much valuable research to the theorist, while at the same time it 

 has proved an inestimable boon to the piactical astronomer.' — Prof. It. Grant. 



'Piazzi set an example of improved methods of observation, resulting in the publication, in 1803 and 1814, of two cata- 

 logues of about 7,<S00 stars— the second \_the above] being a revision and enlargement of the first— which for their time were 

 models of what such works should be.' — Agnes M. Vlerke. 



The original of the work is excessively rare, and almost unprocurible. 



3613 Delia Specola Astronomica de' Re^j Studj di Palermo ; with 4 fne folding plates 07i 



copper of astronomical instruments, 2 vols, folio, fine copy in calf gilt. Vis 6fl? Palermo, 1792-4 



An account of the Palermo Observatory, erected under thie author's supervision, and interesting for the description of 

 the astronomical instruments, including a great 5 foot circle constructed by Ramsden, ' the most perfect measuring instru- 

 ment hitherto employed by an astronomer '(^grnes M. Gierke), which served for the stellar observations embodied in his Star 

 Catalogue, and his discovery of the planet Geres. 



3614 Result of Calculations of the Observations made at various Places of the Eclipse 



of the Sun, June 3, 1788, 4to. (pp. 10), unbound, Zs 6d 1789 



The author's first publication. 



3615 PIOARD (Alfred, de VInstitut) Exposition Universelle Internationale de 1889 h, Paris : 

 Rapport General; with numerous plates, 10 vols, inipl. 8vo. sewn, £1. I5 (p. F. 125. nett) 



ImpHmerie Nationale, 1891-4 



3616 PIOARD (]&mile, de VInstitut) La Science Moderne, et son Etat actuel, post 8vo. seivn, 2s 



[1905] 



3617 PIOARD (Jean) Ouvrages de Mathematique. Observations Astronomiques et Phy- 

 siques par [Jean] Richer. Du Micrometre, par [Adrien] Auzout. DcCrassitie Tuborum, 

 et Experimenta Projectionis Gravium, Auctore [Olaf] ROxMER; with numerous fine copper- 

 plates {many folding) by PiCARD, etc., 4to. sound copy in old hf. calf, £3. IQs La Haye, 1731 



A VERY RARE AND VALUABLE VOLUME, uuknowu to Querard, Poggendorff, and the author's biographer in Biographie 

 Generale. 



It contains the following works by Picard : La laesure de la terre (containing the residts of his meridian measurement 

 hetween Lavoisine and Amiens, in which sextants and telescopes luere employed for the first time) \ De la pratique des grands 

 cadrans par le calcul ; Observations astronomiques faites en diverses parties du royaume, 1072-81 ; Fragments de dioptrique ; 

 Traite du nivellement(co?itoiriin^a (iescri;)<ion. of the author' s hydrostatic Ixdance); Observations astronomiques en Danne- 

 marck : Abrege de lamesure de la terre ; De mensuris. 



Richer's work is important as having been the first to show, by experiments with the pendulum, the gradual decline oi 

 gravity towards the equator, whiie Auzout's treatise contains his discovery of an improved micrometer. 



3618 PICKERING ("WilLiam, Merchant- Ad venturer) The Marrow of the Mathematicks, made 

 Plain and Easie to the understanding of any ordinary Capacity, after a New, Compendious, Easy 

 Method, with Measuring Surface and Solids, etc., and a Small Tract of Gauging Wine, Ale, or 

 Malt, by J. L., P. M., plates and numerous diagrams, 16mo. old sheep neat {rare), 15s 1710 



Tills edition was unknown to Lowndes. There was no copy of any edition in Prof, de Morgan's collection. 



3619 PIOTET [-TURRETINI] (Marie Aug-uste; f.r.s.) Considerations on the Convenience 

 of Measuring an Arch \_sic\ of the Meridian, and of the Parallel of Longitude, having the 

 Observatory of Geneva for their common Intersection, with folding map, 4to. (pp. 22), sewn, 

 bs 1791 



3620 PICTURES of the Heavens, by the Author of * A Present for Young Churchmen', etc., with 

 \\ plates, woodcuts, and star-7naps, fcap. 8vo. cl., 2s 1857 



Dedicated to Lady Raglan. 



3621 PIDDINGTON (Henry, President of Marine Courts, Calcutta) The Sailor's Horn-Book for 

 the Law of Storms : a Practical Exposition of the Theory of the Law of Storms, and its Uses to 

 Mariners of all Classes in all Parts of the World, shewn by Transparent Storm Cards and Useful 

 Lessons, 3rd [final] Ed., enlarged*, folding charts, also 2 transparent ones in pocket, 8vo. hf. blue 

 morocco, g. e. (nice copy), 8s Qd 1860 



3622 Fifth Edition, with folding charts (2 transparent ones inpocket), 8vo. cl, 5s (p. lOs Qd) 1869 



In this work the author originated the word ' cyclone '. 



