42 



THE YOUNG NATURALIST. 



artist) ; and, to be a real artist, he should 

 depict Nature as Nature occurs, in the 

 garb of Truth. A natural study, half- 

 false, half-unnatural, and an imaginative 

 picture, drawn from Nature, are anomalies. 

 Finally, when we consider the rapid strides 

 which Science is making in this modern 

 age ; when we allow the utility of Art in 

 connection therewith ; when Ave can allow 

 of their apparent inseparability, and of 

 the consequent importance of the latter to 

 the former, we must petition the instructors 

 of youthful aspirants to impress upon the 

 minds of their pupils the incalculable 

 benefits accruing from that power of being 

 enabled to delineate, with accuracy, the 

 productions of Nature, so that they may 

 jn time illustrate their thoughts by lines 

 and curves, as effectively as by pen or 

 pencil — written matter. 



EXCHANGES. 



I have good specimens of Sinapis, Paphia, 

 Sibylla, W. album, Adonis, Corydon, Actaeon, 

 Vespertaria, Liturata, Dealbata, Gemina, &c. 

 I should be glad to exchange for local species or 

 varieties of any kind. — W. Prest, 13, Holgate 

 Road, York. 



I have duplicates of Paphia, T. quercus, Loni- 

 eeroe, Filipendulas, Illunaria, Eadiata, Derivata, 

 Derasa, Iota, &c. I want Diurni and Nocturni. — 

 E. F. Niciiolls, 3 Court, 1 House, Jordan Well, 

 Coventry. 



From experiments made by M. Godlewski, it 

 appears that all the Lichens which he subjected to 

 investigation absorb the oxygen of the atmosphere, 

 and exhale carbonic acid in darkness, the formation 

 of gas ceasing when the available oxygen of their 

 receptacle is used up. In the space of twenty-four 

 hours, at the average temperature, they absorb 

 about their own volume of carbonic acid. 



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Communications for insertion should reach u;j 

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" At least half the plants in the world have n(ji 

 bright colored or beautiful flowers ; and Mr' 1 

 Darwin has lately arrived at the wonderful generd 

 alization, that flowers have become beautiful soleh 

 to attract insects to assist in their fertilization: 

 He adds, ' I have come to this conclusion fror 

 finding it an invariable rule, that when a flower 

 fertilized by the wind it never has a gaily colore 

 corolla.' Here is a most wonderful case of beaut'i 

 being useful, when it might be least expected. 

 — Wallace. 



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