The prince of the species, however, seems to be the _Aranea maculata_ of Brazil, vouched for by Dr Walsh as having been seen and examined by him during his travels in that country. In this huge, ungainly, yet harmless and domesticated creature, we evidently possess a treasure of a silk-spinner, with which the non-nervous and practical among our colonial ladies, situated in moderately warm localities like Northern New Zealand, Queensland, and the Cape of Good Hope, might spend many a profitable hour when they became mutually acquainted. It is not only free from the vices of the European spider in not devouring its kind, but it actually exists in little harmonious communities of over one hundred individuals of different ages and sizes occupying the same web. Like the last-mentioned spider, this one is of similar colossal dimensions, and it spins a beautiful yellow network ten or twelve feet in diameter quite as strong as the silk of commerce. Regarding the toughness of this filament, the doctor says: ‘In passing through an opening between some trees, I felt my head entangled in some obstruction, and on withdrawing it, my light straw-hat remained behind. When I looked up, I saw it suspended in the air, entangled in the meshes of an immense cobweb, which was drawn like a veil of thick gauze across the opening, and was expanded from branch to branch of the opposite trees as large as a sheet, ten or twelve feet in diameter.’ Another traveller, Lieutenant Herndon of the United States navy, confirms Dr Walsh’s account of this enormous spider, with the addition that he saw a single web which nearly covered a lemon tree; and he estimated its diameter at ten yards! Probably the latest addition to our knowledge of spider-silk has recently come from the Paris ‘Ecole pratique d’Acclimation,’ a member of which has discovered an African species which spins a strong yellow web, so like the product of the silkworm as to be scarcely distinguishable from it. So promising a material as a fibre of commerce does this seem to be, that, after close investigation, a syndicate of Lyons silk-merchants has reported in its favour; the more so as there is said to be no difficulty in acclimatising the spider in France.