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Figure 220 — Traces of equipotential surfaces shown on a plane drawn through 



a line of dipoles 333 



Figure 221 - Traces similar to Figure 220, but the line of dipoles and solid of 



revolution extend to infinity 335 



Figure 222 - See Section 134 33G 



Figure 223 - Streamlines due to a point source near a sphere 338 



Figure 224 — Velocity due to rotation 339 



Figure 225 — Diagram illustrating coordinate directions 341 



Figure 226 - The equation of continuity 343 



Figure 227 — Relations in axisymmetric flow 345 



Figure 228 — Choice of signs for prolate-spheroidal coordinates 347 



Figure 229 — Streamlines due to translation of a prolate spheroid 349 



Figure 230 — Streamlines for flow past a prolate spheroid 351 



Figure 231 — Translation of a prolate spheroid in the direction of a minor axis 352 



Figure 232 — Choice of signs for oblate-spheroidal coordinates 357 



Figure 233 — Translation of an oblate spheroid in the direction of its axis 359 



Figure 234 - See Section 138, Case 1 362 



Figure 235 — Streamlines for flow past an oblate spheroid in the direction of its 



axis of symmetry 363 



Figure 236 — Flow past a circular disk 364 



Figure 237 — Translation of an oblate spheroid parallel to an equatorial axis 365 



Figure 238 — Flow through a circular aperture in an infinite plane 369 



Figure 239 — Symmetrical streamlines for flow through a circular aperture 371 



Figure 240 — Symmetrical flow past aparaboloid of revolution 377 



Figure 241 — Some streamlines and traces of equipotential surfaces for a jet 378 



Figure z4:-^ — ^ome streamlines and traces of equipotential surfaces for a jet 379 



