A strong pocket knife may be used in trimming specimens and partially cleaning shells that can be safely manipulated on the spot, but the final cleaning should be left until the return home. The knife is also useful for cleaning slates and shales, since the chisel-edge is frequently a trifle too thick for this kind of work. For the more delicate fossils, means for careful packing should be provided; chip-boxes and cotton-wool being indispensable for the smaller specimens. A ready method of packing the fossils obtained from the friable, sandy tertiary deposits is to store them in tins, the contents of which can be firmly secured from rattling by filling up with sand. This sand, however, should be taken from the same bed in which the fossils occur, so as to get no admixture of the smaller shells from another formation or deposit; for although we may not wish to examine the finer material ourselves, it will yield in many cases a rich harvest to our microscopical friends, such residues containing microzoa, as shells of foraminifera, polyzoa and carapaces of the ostracoda. The residues referred to may be obtained from many of our marls and rubbly limestones by the simple process of washing in water, and repeatedly pouring off the finest clayey mud, until only a sandy deposit remains, which can then be dried and sorted over by the aid of a lens or low power microscope. =Hints on Fossil Collecting.--= As regards the places most suitable for collecting fossils, the Cainozoic beds are perhaps, the most accessible to a beginner, especially in Victoria. For instance, the cliff exposures at Beaumaris, Port Phillip, will afford a plentiful supply of the little heart-shaped sea-urchin, _Lovenia_, and an occasional _Trigonia_ and _Limopsis_, as well as many other fossils of the great group of the shell-fish or mollusca. The richest bed containing the sharks' teeth at the above locality is almost perpetually covered with a bed of shingle, but can be reached by digging at the cliff-base. Isolated specimens, however, although rather the worse for wear, may often be picked up amongst the shingle, having been washed up from the foreshore by the tide. An enticing band of large bivalve shells (_Dosinea_), can be seen halfway up the cliffs, near the baths at this locality, but are somewhat disappointing, for when obtained they crumble to pieces in the hand, since their shells are composed of the changeable form of carbonate of lime called aragonite, which has decomposed in place in the bed, after the shells were covered up by the deposit.