Scattering Layers — Bary 
175 
Fig. 4. The dawn descent of two separate layers, the 
first of which also splits into two; "Lachlan” record, L3. 
water of 330 to 550 m. seaward of Banks 
Peninsula (G4 in Fig. 1). 
Examples of more or less anomalous be- 
haviour of layers are shown in Figures 7 and 
8. Figure 7 is from a "Lachlan” fathogram 
made south of Napier (L3, in Fig. 1). It 
illustrates a scattering layer which is descend- 
ing to a deeper level between 2135 and 2155 
hours at which depth it becomes stationary 
Fig. 3. The dawn descent. Note the concentration 
of organisms in depth prior to the differentiation and 
descent of the layer; the northern end of "Lachlan” 
record, L2. 
