There are several papers [1-10] on oscillation for allowed transitions in dyes, and there are dozens of compounds known to oscillate on excitation by ruby laser pulses and also by frequency-doubled neodymium and ruby lasers pulses.We have produced oscillation with solutions of 12 organic compounds in the range 400-650 nm on excitation by the second or third harmonic of a neodymium laser. The Q-switched laser worked into an amplifier, a KDP nonlinear frequency converter, a filter to isolate the required part of the spectrum, and lenses to focus the harmonic onto the solution. Various spectrographs were used to record the emission.The peak powers in the second and third harmonics of the neodymium laser were respectively about 8 and i MW. Oscillation was obtained with liquid solutions and with solid ones (polymer blocks), with the solution in a cell whose layer thickness could be varied from 10 to 50 mm. The blocks were placed in glycerol in the ceil. The oscillation threshold varied widely with the material and the reflection coefficient of the mirrors (from 0.05 MW up to the limit of the harmonic power available). Some of the substances did not oscillate at any available power, including the triphenylpyrazolines.