Science-gossip . observer should live in the wildest districtsof our islands, as much is still to be learned amongthe familiar and common species. Two items forsuccess must, however, be borne in mind, patience The Lepidoptera of the British Islands. ByCharles G. Barrett, Vol. VII. Pp. 336,9 in. X 6 in. (London: Lovell Reeve & Co.,.Limited. 1901.) 12s. net. We have noticed, as the previous volumes ap-peared, this work in our pages. The present onecarries the Heterocera-Geometrina from the Boar-midae, continuing with genus Panagra and con-cluding with Acidaliidae, genus Hyria. At the endt
Science-gossip . observer should live in the wildest districtsof our islands, as much is still to be learned amongthe familiar and common species. Two items forsuccess must, however, be borne in mind, patience The Lepidoptera of the British Islands. ByCharles G. Barrett, Vol. VII. Pp. 336,9 in. X 6 in. (London: Lovell Reeve & Co.,.Limited. 1901.) 12s. net. We have noticed, as the previous volumes ap-peared, this work in our pages. The present onecarries the Heterocera-Geometrina from the Boar-midae, continuing with genus Panagra and con-cluding with Acidaliidae, genus Hyria. At the endthere are additions and corrections. For instance,Xiilnpha»m lateritia Hufn. is added to the Tritishlist on the .strength of a single specimen taken inSouth Wales, so long ago as ISBT, by Mr. W. E. R,Allen, and since overlooked as a variety of Aplectaadvena. It ):as been brought forward by W. Vivian of Swansea. The contents of thevolume are uniform with the previous ones. SCIENCE- G OSSIF. lie. Notes f. EXTEACTION OF lODINE FROM SEAWEED.— has recently been patented in Englandby J. Thesen, of Christiania. The dried seaweedis treated with 5 per cent, to 20 per cent, of sul-phuric acid, which dissolves the whole of the iodinepresent. An oxidising agent is next added, andthe iodine extracted from the liquid by means of amineral oil, such as petToleum spirit. The residualseaweed can be dried and used for manure.— C. , London, Atypus affinis.—The so-called trap-doorspider being a creature often mentioned butseldom seen, a note as to its occurrence in a newlocality may be of interest. On June 2nd I hadthe pleasure of discovering its haunts in a spotabout two miles from Croydon. The specimentaken, a young female, had, as is usual in thisspecies, constructed its tube in a sandy bank, whichhad a south-eastern , the tube entering theground at right angles to the surface. The sitewas overshadowed by a mass of heather, as isapparently often the
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