July, igo6.] 



KNOWLEDGE & SCIENTIFIC NEWS. 



471 



without any kind of manipulation. Outline forms in 

 natural colour resembling- daisies, pansies, ferns, and 

 trees, as well as £feometric patterns, were produced, 

 some as the result of high notes, others of low notes. 

 Certain patterns required the notes to be softly sung, 

 while others were the outcome of powerfully-rendered 



and sustained notes. .\ piece of gla.ss, with spread 

 moist water-colour, placed on the vibrating film, showed, 

 when raised, patterns similar to the concentric rings 

 of timber growth. On giving a spiral motion to the 

 glass or to the vessel, simultaneously with the singing 

 of the note, a series of waves in cornucopia fashion 

 may be made to extend over the surface, producing 

 a beautiful object for lantern displays. 



screen referring to instances of protective resemblance. 

 No more fascinating study we may well imagine cou'd 

 engage the naturalist's attention than this method of re- 

 flecting the doings of the insect world. We see in the 

 first reproduction the larva of the Emperor yioth 

 {S. carpini) ensconced and at rest on bramble; the leaves 

 of the plant match the larval body colour, w'hile the 



spiny tubercles successfully strive to imitate the thorns. 

 The female moth of the same species is seen at rest on 

 heather, after ovipositing on the tips of the stems. 

 The eggs are so cleverly arranged as to resemble the 

 buds of the plant, being of the same size, as well as 

 quadrangular in plan. Yet another example is that of 

 the Orange Tip butterfly, which ri->.r< with w Inq'. rlused 



One of the most attractive cxhiljits was that of .Mr. 

 I'". Enock, who, by means of natural colour lantern 

 slides, showed and dcscriljed the adaptability of lepidop- 

 terous insects to the changeful circumstances of their 

 environment — Nature's own way of protecting insect life. 

 The illustrations which we gi\e fail to convey an ade- 

 quate idea of the manifold colours thrown \'pon the 



amongst the flowers of the umbelliferous plant, Fools' 

 Parsley. When " working " the flower, the insect's 

 wings are wide open, but let a cloud or shadow pass 

 over, and they im-nediately close together as depicted in 

 our photograph (near cross), the protective green colora- 

 tion and irregular moltlings effectually masking the living 

 liutterflv and rendering it almost indistinguishable from 



