Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

739 INDEX, PAGE T Iron, Strength of.. .. 140 -------Weight of .. . > 40 Table of Catenary .. ..352 Tackling and Knots.. .. S7 Tallow, Stowage of,. .. 566 Tangential Angle of Curves 210 Tangents, Logarithmic .. 686 ________ --------- Natural .. .. 621 Tangent to a Parabola .. 648 Teeth of Wheels, Curves of 397 _____________ Diameter ! and Pitch __________400 _______________Different Forms..............395 _______________ ---------------Epicy- cloidal ..............396 ______________Epicycloidal, Method of Forming .. 399 _______________Equivalent Strength in Different Metals..............402 ________________Horse- power of______________396 2-___________Number of 392 _____________Pitch of 400 _____________Power of 396 — Propor- ________ tions of..............393 ____________ --------------Strength of 393 elegraph Alphabet, Morse 302 _____—Bobbins,Wire on337 __________Cable,Su bmarine, peed in..............363 ______________Strains on 360 ---------Capacities .. 326 _______ ________________Electro- static ..............331 _________ -------Catenary Equa- tion ..................309 _____________Modulus of 311 _____________Table of.. 352 —--------Contacts .. .. 329 ---------CopperWire, Re- _________ sistance of ..........343 PAGE Telegraph, Current Loss of 344 ---------Deposit of Metal 333 _________ ---------Dip of Wira .. 311 ——;-------------Table of 351 _________ Disconnections 329 ---------Earth Testing.. 338 _________ ---------Electrical Units 300 _________ Electromagnets 305 ----,----Electromotive Force ..............324 _________ ---------Electromotive Force of Batteries.. .. 334 ---------Electrostatic Capacity..............331 ---------Equation to Ca- tenary ..............309 ---------—---------Para- bola..................310 _________ ---------Fault Testing 327 _________ ---------Germa» Silver 336 ---------Guttapercha .. 335 _________ _________ ---------Heat Developed 334 _________ ---------Hooper's Ma- terial .......... .. 336 ---------Line Testing .. 326_________ _________ ---------Magnets ., .. 305 _________ ---------Mercury Unit 335 _________ ---------Mirror Correc- tion ..............345 _________ ---------Modulus of Ca- tenary ..............311 _________ Morse’s Alphabet 302 _________ ---------Numbers,Useful 341 ---------Polygons.. .. 359 ------— Posts,Strength of 316 _________ ---------Range of Instru- ment .. . • ______340 _________ ---------Resistance .. 322 _________________- of Copper Wire.........348 ____________________ of Materials ..........34T ________— —-------------- for Temperature.........340