0080 Instruments 



Planigraph, projecting tortuous curve on plane. 



Delone, N. B. [1895] Vars. S. Nt. Tr. 



(1895-96) (C. R., Ps. C.) No. 2, 3 pp. 

 Planimeter. Amsler, J. Ziir. Vjschr. 1 (1856) 



41-, 101-. 

 , Amsler's. Decker, G. Dingier 140 (1856) 



27- ; 141 (1856) 29-. 



_, __. Weisbach, J. Giving. 4 (1858) 1-. 

 , . Wittstein, T. Hann. Z. Archt. Vr. 7 



(1861) 289-. 

 , . Petsch, . A. Pon. Chauss. 16 (1868) 



124-. 

 , . Combes, C. P. M. A. Mines 19 (1871) 



278-. 

 , . Bramwell, F. J. B. A. Rp. 42 (1872) 



401-. 



, . Purvis, F. P. Ph. Mg. 48 (1874) 11-. 

 , . Rateau, A. As. Fr. C. E. (1896) (Pt. 



2) 130-. 

 , , proof of principle. Steggall, . Edinb. 



Mth. S. P. 7 (1889) 25-. 

 , , theory. Zhblkovskil,A. K. (xn) [1865] 



Kazan Un. Mm. (1864, Ps.-Mth. No. I), 



219-. 

 , , . Aldis, W. S. N. Eng. I. Mn. E. 



T. 28 (1879) 211-. 

 , , . Thire, A. A. Mines 11 (1887) 



121-. 

 , Bouniakovsky's and modification. Decker, 



G. Dingier 140 (1856) 27-. 

 , construction. Schulten, N. G. of. (vm) 



Helsingf. Ofv. 5 (1863) 245-. 

 , Coradi's. ? Coradi, . V. Nost. Eng. Mg. 



32 (1885) 465-. 

 , hatchet. Hill, F. W. [1894] L. Ps. S. P. 



13 (1895) 229-; Ph. Mg. 38 (1894) 265-. 

 , history. Favaro, A. Forster Al. Bauztg. 



38 (1873) 68-, 93-. 

 , . Wolf, R. Ziir. Vjschr. 37 (1892) 



111-; 38 (1893) 3-. 

 - of Hohmann and Coradi. Fischer, G. Cztg. 



Opt. 5 (1884) 74-. 

 , Lippincott. Greenhill, A. G. [1899] Sc. 



Abs. 3 (1900) 234. 

 , Maass-, description. Gunther, F. Cztg. 



Opt. 7 (1886) 247-. 

 , new. Eckert, , <& Hamann, . Cztg. 



Opt. 18 (1897) 125. 

 , , description. Maevskij, J. A. [1889] 



Vars. S. Nt. Tr. (1889-90) (C. R., Ps. C.) 



No. 2, 7-. 

 , form. Maxwell, J. C. Edinb. T. Sc. 



S. Arts 4 (1856) 420-. 

 , (Beverley). Balfour, J. M. [1865] 



Edinb. Sc. S. Arts T. 7 (1868) 198-. 

 , (1852). Baranoffsky, E. Helsingf. Acta 



4 (1856) 3-. 

 , (1855). Bouniakoicsky, V. [1855] St 



Pet. Ac. Sc. fill. 14 (1856) 152-. 

 polar. Amsler, J. Dingier 140 (1856) 321- ; 



141 (1856) 326-. 

 , , Amsler's. Decker, G. Dingier 141 



(1856) 330-. 



, , . Sehinz, E. Bern Mt. (1857) 152-. 

 , , . NehU, C. Giving. 20 (1874) 71-. 

 , , , results. Hartogh Heys van Zou- 



teven, H. Arch. Neerl. 5 (1870) 440-. 



Instruments 0080 



Planimeter, polar, determination of constant. 



Schell, A. Wien SB. 56 (1867) (Ab. 2) 325-. 

 , , general theory. Schell, A. Wien SB. 



58 (1868) (Ab. 2) 189- ; Carl Epm. 11 (1875) 



, ', note. Resal, H. C. B. 77 (1873) 



509-. 



, Eichard. ? Anon. Sc. Abs. 1 (1898) 635. 

 , rolling, theory. Fenner, P. Cztg. Opt. 7 



(1886) 133-. 

 , solutions of electric problems. Atkinson, 



L. B. Elect. 22 (1889) 702- ; 23 (1889) 



29-. 

 , Trunk's. Hiibner, A. Arch. Mth. Ps. 44 



(1865) 337-. 



, Wetli's. Stampfer, S. Wien SB. (1850) 



(Ab. 1) 134-. 

 Planimeters. Moberg, A . (vm) [1859] Helsingf. 



Ofv. 5 (1863) 53-. 



. Beck, A. Eiga Cor.-Bl. 40 (1898) 99-. 

 , free. Bouniakowsky , V. St Pet. Ac. Sc. 



Bll. 2 (I860) 567-. 



and similar instruments. Kohlmorgen, 0. 

 Westf. Vr. Jbr. (1890) 126-. 



of Wetli, Decher, and Amsler. Miller, 

 W. H. Ph. Mg. 16 (1858) 230-. 



Problems of 3rd degree, instrument for solution. 



Simon, C. Les Mondes 4 (1864) 547-. 

 Proportion -table, equivalent to sliding -rule 



13' 4" long. Everett, J. D. Ph. Mg. 32 



(1866) 350-. 



Protractor, semicircular, improved form. 

 Stewart, J. N. Z. I. T. 3 (1870) 316-. 



for trisecting angles. Alexander, J. H. 

 Silliman J. 7 (1849) 243-. 



Quadrature, instrument for. Boileau, P. C. E. 



15 (1842) 594-. 



Eefraction through prism; apparatus to illus- 

 trate deviation of ray. Marcucci, S. Ev. 



Sc.-Ind. 27 (1895) 101-. 

 Scale, accuracy of, and limit of perception. 



Neovius, E. Helsingf. Ofv. 23 (1881) 71-. 

 " Scoliograph, unicursal," for drawing algebraic 



curves. Boguslawsky, A. [1881] Mosc. S. 



Nt. Bll. 57 (1882) (Pt. 2) 72-. 

 Screw, use in mathematical instruments. 



Carl, P. Carl Epm. 2 (1867) 37-. 

 Sectograph (for dividing lines and angles, &c.) . 



Jones, T. Tilloch Ph. Mg. 42 (1813) 401-. 

 Sine and cosine quadrant. Schreiber, C. Gztg. 



Opt. 7 (1886) 38-. 

 Spherical integrator, modification of a form of. 



Smith, F. J. Ph. Mg. 22 (1886) 147-. 



triangles, instrument for determining, by 

 mechanical action. Penrose, F. C. As. S. 

 M. Not. 36 (1876) 281-. 



Spherometer. Mayer, A. M. Am. J. Sc. 32 



(1886) 61-. 

 , new. Kruss, H. Cztg. Opt. 12 (1891) 



63-. 

 Spirals, Johnson's volutor for drawing. Booth, 



J. B. A. Ep. (1860) (Pt. 2) 60-. 

 Square with parallel lines. Chaussenot, (I'Aine). 



Par. Bll. S. Encour. 43 (1844) 4-. 

 Stanhope logical and arithmetical machine. 



Harley, (Rev.) R. N. S. W. E. S. J. 24 



(1890) 121-. 



37 



