Zoology Publications from Victoria University of Wellington—Nos. 42 to 46
(i) Absorption spectra
(i) Absorption spectra
Absorption curves were obtained using a Perkin Elmer Model 137 ultra-violet and visible spectrophotometer. The ultraviolet and visible regions are covered on separate quarto size charts, 190 to 390 and 350 to 750 millimicrons. Each range represents one drum revolution, and turning from one range to the other automatically switches the hydrogen and tungsten lamp sources.