With respect to localities favourable to seaweed-gathering, I may specially mention the south coast of Devon; from Exmouth, where _Bryopsis_ and _Padina pavonia_ grow in perfection, to Torquay and the coves of Torbay, and down the coast to Plymouth, Cawsand Bay, and finally Whitsand Bay, the "happy hunting-grounds" of the enthusiastic algologist. On the north-east coast, Filey and Whitby must be mentioned, as well as the shores upwards from Tynemouth to Whitley. Peterhead is also a good locality, the rare _Ectocarpus Mertensii_, _Odonthalia dentata_, and _Callithamnion floccosum_ being found there in abundance. Other favourable stations in Scotland, well known to me, are Lamlash Bay and Whiting Bay; nor must the Isle of Wight be forgotten, for in the rock-pools, at Shanklin especially, the most magnificent form of _Padina pavonia_ may be found growing during the summer months in the utmost profusion. In conclusion, I beg leave to inform my readers that I have recently published a volume on British Marine Algæ, in which every species that is likely to be met with by ordinary collectors is described, and every British seaweed that is capable of illustration in a work intended for popular information, is figured from plants in my own possession, and, in addition, diagrams and figures from drawings of magnified portions, illustrative of structure and fructification, appear throughout the pages of my work. INDEX. A PAGE Adventures of fungus hunters, 178 Advice to fungus collectors, 179 Affixing lichens, 189 Agaric placed to catch spores, 172 Agaricus cucumis, 176 ---- melleus, 175 ---- mucidus, 177 Agrostis stolonifera, 140 American moth-trap, 57 Ammonia for insects, 59 Anatomy of molluscs, 22 ---- of vertebrates, 18 Anchomenus sexpunctatus, 71 Ants' nests for beetles, 91 Apothecia, 191 Apparatus for taking insects, 57 Arm of man, 21 Arrangement of eggs, 39 ---- of fossils, 11, 13 ---- of plants, 135 ---- of shells, 116 Arranging grasses, 142 ---- lichens, 191 Artificial beetle-traps, 87 Assiminea Grayana, 108 Attracting insects, 57 B Beating for beetles, 89 ---- for larvæ, 47 Beech, 121 Beetles, 67 ---- by post, 86 ----, where to find them, 86-94 Bentall's drying-paper, 141 Best season for lichens, 188 ---- trees for insects, 51 Birds' eggs, 27 ---- nests, 42 Bivalves, 104 Bleaching bones, 23 Blooms for attracting insects, 53 Blowing eggs, 30 Blowpipe for eggs, 31 Bog mosses, 145 Bombyces, 45 Bones, 16 ---- of dog, 17 Bone-preservers' shops, 17 Books on seaweeds, 196-7, 208 Boring holes in eggs, 33 Bottle for beetles, 76 Boulders, 5 Box for carrying insects, 55 Braces for insects, 61 Breeding beetles, 68-9 Bulb-tube, 31 Bulimus acutus, 107 Butterflies and moths, 44 ---- at rest, 50 Butterworts, 123 Buying eggs, 28 C