The passage discusses the spectral characteristics of N. G. C. 7619, noting that its absorption lines are similar to those of binary stars and extra-galactic nebulae. The weak absorption lines in N. G. C. 7619 suggest a dispersion in velocity and blending of spectral types within the nebula. The author, Edwin Hubble, also examines the relationship between distance and radial velocity among extra-galactic nebulae. He finds a linear correlation between distances and velocities, suggesting a new solution for the solar motion that incorporates distances as coefficients of the $K$ term. Hubble presents two solutions for the solar motion, with the results indicating a value for $K$ around 500 km/sec per million parsecs. The study also explores the velocity-distance relation for 22 nebulae without individual distances, using mean apparent magnitudes and luminosities. The findings support the validity of the velocity-distance relation and suggest further research on more distant objects to refine the solar motion solution. The potential implications of the velocity-distance relation, including its possible connection to the de Sitter effect and the curvature of space, are briefly discussed.The passage discusses the spectral characteristics of N. G. C. 7619, noting that its absorption lines are similar to those of binary stars and extra-galactic nebulae. The weak absorption lines in N. G. C. 7619 suggest a dispersion in velocity and blending of spectral types within the nebula. The author, Edwin Hubble, also examines the relationship between distance and radial velocity among extra-galactic nebulae. He finds a linear correlation between distances and velocities, suggesting a new solution for the solar motion that incorporates distances as coefficients of the $K$ term. Hubble presents two solutions for the solar motion, with the results indicating a value for $K$ around 500 km/sec per million parsecs. The study also explores the velocity-distance relation for 22 nebulae without individual distances, using mean apparent magnitudes and luminosities. The findings support the validity of the velocity-distance relation and suggest further research on more distant objects to refine the solar motion solution. The potential implications of the velocity-distance relation, including its possible connection to the de Sitter effect and the curvature of space, are briefly discussed.