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‎The Philosophical Transactions of the Royal Society of London‎

‎Philosophical Transactions of the Royal Society of London. Vol 181. Philosophica‎

‎Philosophical Transactions of the Royal Society of London. Vol 181. Philosophical Works of the Royal Society of London. Volume 181 In Russian (ask us if in doubt)/Philosophical transactions of the royal society of London. Vol 181. Filosofskie trudy Londonskogo korolevskogo obshchestva. Tom 181London Printed Harrison and sons St. Martins Lane W.C. 1890. 628c.. SKUalb8bf230e46b988c86.‎

‎Determination of the Surface-Tension of Water by the Method of Jet Vibration. Offprint from: Philosophical Transactions of the Royal Society of London, Series A, Vol. 209. pp. 281-317. - [BOHR'S FIRST PUBLISHED PAPER - PRESENTATION COPY]‎

‎London, Harrison & Sons, 1909 Large4to. Original printed wrappers. Offprint from: ""Philosophical Transactions of the Royal Society of London, Series A, Vol. 209. pp. 281-317."" With cloth backstrip and I small nick to upper and lower corner of front wrapper. A fine and clean copy. Pp. 281-317.‎

‎Scarce first edition, off-print issue, of Bohr's first published paper, constituting his only ever work in experimental physics. ""His first research project, a precision measurement of the surface tension of water by the observation of a regularly vibrating jet, was completed in 1906, when he was still a student, and it won him the gold medal from the Academy of Sciences. It is a mature piece of work, remarkable for the care and thoroughness with which both the experimental and theoretical parts of the problem were handled."" (DSB).This Bohr's fist paper grew out of a work which Bohr did in 1906, and for which he won a gold medal from the Academy of Sciences. The subject was to experimentally investigate a method, proposed by Lord Rayleigh, for measuring the surface tension of water by the observation of a regularly vibrating jet. ""Bohr [...] included in his work essential improvements on Rayleigh's theory by taking into account the influence of the liquid's viscosity and of the ambient air, and by extending the earlier theory from infinitesimal to arbitrary large vibration amplitudes. In order to execute his experiments he had first of all to cope with one complication. The university had no physics laboratory."" (Pais, p. 101). Bohr thus constructed many of the instruments himself using his father's laboratory. """"I did the experiments completely alone alone in the physiological laboratory... it was a great amount of work"", which was technically demanding."" (Pais, p. 102). In spite of being Bohr's only ever work in experimental physics, it documents his deep understanding of the methods of experimentalists.""On 23 February 1907 the Academy notified him that he had won its gold medal. In 1908 he submitted a modified version to the Royal Society in London. It was his first and last paper on experiments he himself performed. His second publication was his last to deal with surface tension of liquids"" it was purely theoretical. Both papers were favorably referred to in later literature.The manuscript of the prize essay, never published in its original form, is preserved in the Bohr Archives. It is handwritten, by Harald Bohr [i.e. his brother]."" (Pais, p. 102), Rosenfeld, Bohr Bibliography No. 1. Rosenfeld, Dictionary of Scientific Biography II, pp. 239. Pais, Niels Bohr's Times, pp. 101-02.‎

‎On Large-Scale Sample Surveys. (Offprint from: Philosophical Transactions of the Royal Society of London, Series B, Vol. 231, pp.329-451).‎

‎London, Cambridge University Press, 1944. Large 4to. Original printed wrappers. A fine copy. Owner's signature of statistician Anders Hald (the author of ""A History of Mathematical Statistics""). (123 pp.).‎

‎First edition, offprint issue of this important paper in the history of statistics. ""Mahalanobis's contributions to large scale sample surveys are among his most significant and lasting gifts to statistics. He started his work on sample surveys with estimation of area and yield of jute crop in Bengal in 1937. However, it was not easy for him to get these estimates"" controversy between him and the advocates of complete enumeration continued for over a decade. Ultimately he was able to demonstrate that estimates based on sample surveys were often more accurate than those based on complete enumeration, and that sample surveys could yield estimates with small margins of error within a short time and at a smaller cost than complete enumeration. He made many methodological contributions to survey sampling that included optimal choice of sampling design using variance and cost functions, and the technique of interpenetrating network of sub-samples for assessment and control of errors, especially non-sampling errors, in surveys. The concept of pilot surveys was a forerunner of sequential sampling developed by Abraham Wald, as acknowledged by Wald in his book. In addition to introducing these concepts, Mahalanobis raised important and difficult philosophical questions on randomness and representativeness of a sample, which remain relevant and challenging even today. He was elected Chairman of the United Nations Sub-Commission on Statistical Sampling in 1947, and held this post until 1951. His tireless advocacy of the usefulness of sample surveys resulted in the final recommendation of this Sub-Commission that sampling methods should be extended to all parts of the world. Mahalanobis received the Weldon Medal from Oxford University in 1944 and was elected Fellow of the Royal Society, London, in 1945, for his fundamental contributions to statistics, particularly in the area of large-scale sample surveys."" - Heyde: Statisticians of the Centuries, p.436.‎

‎Determination of the Surface-Tension of Water by the Method of Jet Vibration. [Offprint from: Philosophical Transactions of the Royal Society of London, Series A, Vol. 209. pp. 281-317.] - [BOHR'S FIRST PUBLISHED PAPER - PRESENTATION COPY]‎

‎(London, Harrison & Sons, 1909). Large 4to. Original printed wrappers" wrappers loose and with lack of paper, mostly to back wrapper, which is quite chipped and nicked, with tears, and lacking a bigger part of the upper right corner. Front wrapper merely lacking a few smaller pieces at the top, not affecting the presentation inscription. Pp. 281-317.‎

‎Extremely scarce first edition, off-print issue with presentation-inscription, of Bohr's first published paper, constituting his only ever work in experimental physics. ""His first research project, a precision measurement of the surface tension of water by the observation of a regularly vibrating jet, was completed in 1906, when he was still a student, and it won him the gold medal from the Academy of Sciences. It is a mature piece of work, remarkable for the care and thoroughness with which both the experimental and theoretical parts of the problem were handled."" (DSB).The work is inscribed to renowned Danish physicist and meteorologist Dan la Cour (1876-1942), son of the great Poul la Cour (1846-1908), who is considered the ""Danish Edison"". The inscription reads as thus: ""Hr. Docent D. la Cour/ ærbødigst/ fra/ Forfatteren."" [In Danish, i.e.: ""Mr. Assistant Professor D. la Cour/ with great respect / from/ the author.""].Dan la Cour was the assistant of Niels Bohr's father, Christian Bohr, and a well known scientist. From 1903, he was head of the department of the Meteorological Institute, and from 1923 leader thereof. From 1908 he was Associate Professor at the Polytechnic College. His original scientific works are highly respected, as are his original apparati for measuring earth magnetism which are considered highly valuable. ""His original intelligence, which in many ways resemble that of his father, also bore fruit in his patenting of various inventions: the ""Pyknoprobe"", developed to quickly determine the different layers of the sea"" a use of termite in quickly heating food and drinks out in the open under unfavourable weather conditions."" (From the Danish Encyclopaedia - own translation). He wrote a number of important and esteemed works and was member of the Danish Scientific Academy as well as many prominent international scientific commissions of meteorology and geophysics (i.e. president of the International Geodetical and Geophysical Union). He was also honorary Doctor at the George Washington University. This Bohr's fist paper grew out of a work which Bohr did in 1906, and for which he won a gold medal from the Academy of Sciences. The subject was to experimentally investigate a method, proposed by Lord Rayleigh, for measuring the surface tension of water by the observation of a regularly vibrating jet. ""Bohr [...] included in his work essential improvements on Rayleigh's theory by taking into account the influence of the liquid's viscosity and of the ambient air, and by extending the earlier theory from infinitesimal to arbitrary large vibration amplitudes. In order to execute his experiments he had first of all to cope with one complication. The university had no physics laboratory."" (Pais, p. 101). Bohr thus constructed many of the instruments himself using his father's laboratory. """"I did the experiments completely alone alone in the physiological laboratory... it was a great amount of work"", which was technically demanding."" (Pais, p. 102). In spite of being Bohr's only ever work in experimental physics, it documents his deep understanding of the methods of experimentalists.""On 23 February 1907 the Academy notified him that he had won its gold medal. In 1908 he submitted a modified version to the Royal Society in London. It was his first and last paper on experiments he himself performed. His second publication was his last to deal with surface tension of liquids"" it was purely theoretical. Both papers were favorably referred to in later literature.The manuscript of the prize essay, never published in its original form, is preserved in the Bohr Archives. It is handwritten, by Harald Bohr [i.e. his brother]."" (Pais, p. 102), Rosenfeld, Bohr Bibliography No. 1. Rosenfeld, Dictionary of Scientific Biography II, pp. 239. Pais, Niels Bohr's Times, pp. 101-02.‎

‎Philosophical transactions of the royal society of London - Series B Biological Sciences n°688 Vol 242 pp.99-125 1 january 1959 - A study of variation and relative growth in the blastoid orbitremites + envoi de l'auteur.‎

‎The Royal Society Burlington House Piccadilly London. 1959. In-4. Broché. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. Tiré à part paginé de 99 à 125 - tiré à part en anglais - envoi de l'auteur sur le 1er plat - tampons sur le 1er plat - quelques figures en noir et blanc dans le texte - une planche en noir et blanc.. . . . Classification Dewey : 420-Langue anglaise. Anglo-saxon‎

‎Tiré à part en anglais. Classification Dewey : 420-Langue anglaise. Anglo-saxon‎