0080 Instruments 



Integration, mechanical. Nehls, C. Giving. 



20 (1874) 71- ; 21 (1875) 131-, 199-, 261-. 

 , , applied to three bodies' problem. Strom- 



gren, E. Stockh. Ofv. (1900) 443-. 

 , , of general linear differential equation of 



any order with variable coefficients. Thomson, 



(Sir) W. (Lord Kelvin). E. S. P. 24 (1876) 



271-. 

 , , linear differential equations of 2nd 



order with variable coefficients. Thomson, 



(Sir) W. (Lord Kelvin). E. S. P. 24 (1876) 



269-. 



, , the product of two functions. Suther- 

 land, W. Ph. Mg. 20 (1885) 175- ; 21 (1886) 



141-. 

 Integrator, Amsler's. Nehls, C. Hann. Z. 



Archt. Vr. 18 (1872) 534-. 

 . Abakanowicz,B. (xn) Krk. Ak. (Mt.-Prz.) 



Bz. & Sp. 7 (1880) 75-. 

 , cubical, description. McElroy, G. W. A. 



Mth. 3 (1887) 105-. 

 , disk-globe-and-cylinder. Thomson, (Prof.) 



Jas. E. S. P. 24 (1876) 262-. 

 , instrument for graphic integration. Abdank- 



Abakanowicz, B. C. E. 92 (1881) 402-, 515-. 

 , mechanical, Amsler-Laffon's. Merrifield, 



C. W. Nv. Archt. T. 21 (1880) 252-. 

 , , for areas, etc. Deprez, M. C. E. 73 



(1871) 785-; Les Mondes 27 (1872) 10-. 

 , -, ((Xdx+Ydy). Cayley, A. B. A. 



Ep. (1877) (Sect.) 18-. 

 , , work done by a force. Fuchs, K. 



Mth. Termt. Ets. 13 (1895) 239-; Mth. Nt. 



B. Ung. 13 (1897) 144-. 



, new form. Marinovitch, B. Lum. Elect. 



17 (1885] 529-. 

 , model. Napoli, D. & Abdank-Abakano- 



wicz, . C. E. 101 (1885) 592-. 

 , Zmurko's. Skibinski,P.K. Kosmos(Lw.) 



9 (1884) 185- ; Wierf Ak. D. 53 (1887) (Ab. 2) 



35-. 

 Integrators. Hummel, . Dingier 275 (1890) 



17-. 

 , mechanical. Abdank-Abakanowicz, B. 



Lum. Elect. 18 (1885) 49-, 110-, 161-, 249-, 



306-, 393-, 535-, 589-; 24 (1887) 3-, 54-, 



161-. 

 , two mechanical. Fraser, A. Y. Edinb. 



Mth. S. P. 4 (1886) 29-. 

 Integrometer, new. Abdank-Abakanowicz, B. 



C. E. 95 (1882) 1047-. 



Involution and evolution of numbers, instru- 

 ment for. Roget, P. M. [1814] Phil. Trans. 

 (1815) 8-. 



Least squares, instrument for. Bouniakowsky , 

 V. Pogg. A. 107 (1859) 463-. 



Linear differential equation of 2nd order, general 

 mechanism for integrating. Tait, P. G. 

 [1876] Edinb. E. S. P. 9 (1878) 118-. 



Link-work apparatus for describing curves. 

 Janse, L. N. Arch. Wisk. 9 (*1882) 61-. 



Linkages for tracing conic sections. Stronq, 

 W. M. A. Mth. 8 (1893-94) 181-. 



x m . Freeland, F. T. [18791 Am. J Mth 



3 (1880) 316-. 



Logical machine, Jevons' . Sonnenschein, E. A 

 (xi) [1883] Birm. Ph. S. P. 4 (1885) 72-. 



36 



Instruments 0080 



Logical machine, new. Marquand, A. Am. 



Ac. P. 21 (1886) 303-. 



Mathematical instruments, models etc., ex- 

 hibition in Munich. Dyck, W. D. Mth. Vr. 



Jbr. 3 (1894) 39-. 

 Mechanisms, new: projector, ellipsograph, . . . 



Delaunay, N. Bll. Sc. Mth. 19 (1895) 240-. 

 Mensurator and coelometer. Adams, M. L. 



Mth. S. P. 5 (1874) 141-. 

 Military surveying circle. Delanges,P. Bologna 



Mm. I. It. 1 (pte. 2) (1806) 63-. 

 Mirror for drawing in perspective. Schone- 



mann, P. Z. Nw. 10 (1874) 102-. 

 Multiplication by a mechanical device. Ber- 



delle, C. As. Fr. C. E. (1887) (Pt. 2) 210-. 

 Nautical instruments, and calculating appara- 

 tus. Gelcich, E. Cztg. Opt. 5 (1884) 242-, 



253-, 268-, 277-; 6 (1885) 9 ; 7 (1886) 265-. 

 Nicolas's gyrograph for tracing arcs of large 



circles. Gobin, A. Lyon A. S. Ag. 8 (1864) 



520-. 

 Nurnberg, German Museum, mathematical 



collection. Giinther, S. Lpldina. 14 (1878) 



93-, 108-. 

 , , instruments. Giinther, S. D. 



Nf. Vh. (1893) (Th. 2, Halfte 1) 32. 

 Observations, mechanical calculation of results. 



Favaro, A. Yen. I. At. 2 (1876) 559-. 

 Pantograph ; proof of chief theorem, etc. 



Haussner, A. Arch. Mth. Ps. 65 1880) 



334-. 

 , scenographic, for projecting geometric 



figures. Magistrini, G. B. Bologna Opusc. 



Sc. 1 (1817) 289-. 

 Pantographs. Ott, A. Cztg. Opt. 17 (1896) 



161-. 

 , proof of properties (l r + 2 r + 3 r x r ) . Li- 



gowski, W. [1879] Arch. Mth. Ps. 65 (1880) 



329-. 

 Parabola, apparatus for drawing. Thallmayer, 



V. Dingier 227 (1878) 430-. 

 Parabolograph. Delone, N. B. Es. Ps.-C. S. 



J. 29 (Ps.) (1897) 76. 



Parallel lines, instrument for drawing. Nichol- 

 son, W. Nicholson J. 2 (1799) 429-. 

 , . Suverkrop, J. P. [1883] Sc. 



S. Arts T. 11 (1887) 73-. 



rule, new. B., R. Nicholson J. 9 (1804) 

 212-. 



, . Boswell, J. W. Nicholson J. la 



(1806) 196- 

 " Perspecteur-calquer," instrument for drawing 



in perspective. Breton, . Isere S. Bll. 27 



(1892) 659-. 

 Perspective drawer. Brauer, E. Z. Mth. Ps. 



43 (1898) 163-. 



drawing instrument. Brunei-Bar ennes, 

 de. Dingier 34 (1829) 325-. 



, Verly's instrument, report. Rodolphe, . 



Metz Mm. Ac. 20 (183^39) 258-. 



, scale for dividing vanishing lines. Cumber- 

 land, G. Nicholson J. 16 (1807) 1-. 



Plagiograph aliter skew pantigraph. Sylvester, 

 J. J. Nt. 12 (1875) 168. 



.history. Sylvester, J. J. Nt. 12 (1875) 214-. 



Plane surface, formation, law of progress of 

 accuracy. Airy, (Sir) G. B. Ph. Mg. 42 

 (1871) 107-. ' 



