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I'm Windsor inii Eton Scibntikh So 



■ I .vn exhibition this yei 1 I 'ecembei 6th and 



;'li. which was well worth the journey from 1 Ion to 



P id nt, Mi. M. D. Hill, B.A., F.Z.E., 



!, 1 ollege, had a large series of living marine 



animals from the < imensol Echinus 



particularly well showing their tube feet. He had 



;less lizard allied to the blind 



m, ana s blue tonj 1 Mi: ard, « hich from time to 



warmed 1 diatoi in the ieries ol 



'1 novelties, A feature of the show was the 



demonstration ol iter iscopic lantern pictures by 



Mi. Oldham. The two familiar parts of the double 



tinted 1 para) 

 slides and were thrown one ovei the other upon the 

 screen. One lantern using reil light gave a red 

 picture, the other produced one with complendary 

 colour, green. Where these pictures overlapped, 

 which they <liil not of course absolutely do, the 

 resulting picture was a monotone. There « IS llso to 



the naked eye a necessary indistinctness, seeing that 

 the combined pictures were not identical. 1 m 

 putting on, nol rose coloured spectacles exactly, but 

 a pair with one glass red and the other 

 a fine effect was produced, each glass 

 allowed only one picture to reach the eyi 



the pair combined to form a single 

 photograph, but in relief as seen in the ordinary 

 apparatus. Mi. Everett attracted cpiite as much 

 attention with Zesla's experiments, and the- most 



developments of his apparatus. The explana- 

 tion of the matter is, that alternately electrical currents 

 ol very high frequency, have no harmful effect on the 

 human frame. It must, however, be said thai to see 

 a vacuum tube lit up when taken in one hand by the 

 experimenter whose other was in connection with the 

 terminal of the apparatus -seemed a veritable repre- 

 sentation of a magic wand. The effect was not 

 lessened when sparks were drawn from Mr. Everett's 

 nose. A Maxim gun with iwo-red-coated "beggars 

 present in the body " to explain its mechanism, came 

 in lor a good deal of attention. Carbon printing 

 from photographic negatives was practically shown. 

 Liquid carbon dioxide was siill a novelty to many 

 Microscopes were numerous, and 3 fine 

 series of lepidoptcra gave a touch of colour. Lastly, 

 the presence of the honorary secretary, Mr. I. W. 



. 1 in success to his own work. — W. M. Webb. 

 North London Nati rai History Society. 

 Oct. 5, rSgg. — The exhibits of the Pocket Box 

 Microscope and Lantern Inhibition were consider- 

 ably more numerous than at the previous Exhibition, 

 and contained much of interest. Messrs. Austin and 

 Hanson exhibited birds' eggs, Messrs. C. S. Nichol- 

 son and K. \V. Robbins botanical specimens, Mr. 

 Nicholson's including Inula crithmoides, Thalictrum 

 dunense, Set veriia, Euphorbia portlandica and 

 utcAe hederae ; but the exhibits of Lepidoptera 

 were the most numerous. Perhaps the most interest- 

 ing of these, in view of the Society's particular 



. and aims, vva- Mr. Colin Murray s 

 insects, taken at electric light at Stratford this 

 these included Zeusera pyrisa, Dicranura bifida, 



. ffyhphila 



nitidis, Calami a liitosa, 7'n 

 fimbria, I Una and // 



, i,na. t hi. 19, 1 \> 



Gorlyna and //, from 



Stratford were | u the loi al 



lurl ly : .1 bred spi 1111, n ol 



md 

 ol ffy " <i autumn from Hali 



End by Mr. Prout. I nhil 



hibiled various Lepidopl 1 iding lly 



rami i.redi. 



/ ithosia -ericea and Cyma 



form) from v\ irrington. lie stated thai only one 

 specimen out of nine bred /'. piniperda had d, ■ 

 perfectly, the rest showing a certain amoui 

 crippling on malformation, particularly in the left 

 hind wing. A di - 



phv logenetic origin of such weaknesses. Mr. Shi 

 ilso passed round a drawing of a pupa, evidently of 

 Sphinx convolvuli, from a larva found on Convolvultti 

 n Deal. Mi. Frost read a paper entitled 

 "Notes and Echoes," urging the society to 

 make certain import, u res in its 



dure, with a view to organising i - work and 

 i mg its membership, and thereb) its sphere 

 of usefulness. lie emphasised the need for 

 popularising the study, ami Lhe opinion 



thai it was essential to the well-being and the 

 development of the society that it should 

 sufficient members to render possible the acquisition 

 of premises of its own. He also put in a plea for the 

 accumulation of facts, as contrasted with mere 

 opinions or theories, and for more systematic 

 research work, and indexing of work already 

 published, in such a u.iv as to make it 

 sible. In the discussion which followed, Mi. 

 Prout siatcd that the Council had already appointed 

 a Commission to consider some of these questions, 

 and that they would probably come before the 

 society again by-and-by. Nov. j. r8gg. I xhibits : 

 Messrs. Bacotand Simes exhibited Scotch 1 pidoptera 

 taken by themseh es this season, including line variable 

 series of Hydroecia nictitans var. lucens and of 

 Cidaria immanata, and also series 

 Ct oena haworthii, Noclua castanea and others, and 

 odd specimens of Mamestra furva, Nbctua dahlii, 

 Calocampa solidaginis, Cirrhoedia xeramfelina, etc 

 Miss Robinson exhibited a very interesting lot of 

 paintings of Scottish scenery. Communications : 

 Mr. Bacot announced that he had recently had larvae 

 of the Processionary Moth hatch from the egg. and 

 that they immediately commenced their peculiar pro- 

 cessionary performance. Messrs. C. Nicholson and 

 R. W. Robbins reported recent visits to lipping 

 Forest, in which Chesias spartiata had been taken in 

 different parts : Mr. Lane stated that this species 

 could be readily tramped up out of broom by day. 

 Election of President : Mr. J. A. Simes, being the 

 only nominee for the office for the year iqoo. was 

 declared duly elected president. Mr. Simes then 

 read a very interesting paper on ''A Holiday in the 

 Highlands," with numerous lantern illustrations 

 under the superintendence of Mr. Wheeler. — Louis 

 A. /'rout, Hon ' 



Royai Mbteorologh v i Soi u.iv. — Themonthly 

 meeting of this society was held on Wednesday even- 

 ing, the 20lh instant, at the Institution of Civil 

 Engineers, Mr. F. C. Bayard, I.L.M.. President, in 

 the chair. Mr. Baldwin Latham, M.Inst.* .1... read 

 a paper on "The Climatic Conditions Necessai 

 the Propagation and Spread of Plague.'' The bubonic 

 is primarily due to a specific organism 01 



