596 REVIEWS. [^October, 



The other suggestion is^ that artists should study the subject 

 for themselves, or in other words, make themselves perfect mas- 

 ters of the external forms, habits, associations, and combinative 

 capacities of the plants which they mean to represent or to use 

 in company with other subjects of their pencil. It would not be 

 a heavy task to learn all the Scotch Thistles and English This- 

 tles too, to distinguish them from each other, and to know them 

 by their peculiarities. It would not be a great labour to get 

 together and study a series of the Trefoils, or of all the Wood- 

 Sorrels that grow in Ireland. Thus the artist might be in a 

 condition to judge for himself, without relying on the botanist, 

 who has no means of forming an opinion on the subject but by 

 the fanciful representations of the designer. The question is 

 rather antiquarian than botanical ; and in the name of our 

 botanical brethren, we protest that our being unable to identify 

 the two national emblems in dispute, is no stigma on botany. 

 This science, like other natural sciences, deals with present facts, 

 not with heraldic antiquities. The botanist can show all the 

 Thistles of Scotland, and the artist may compare them with their 

 representations on the national shields, and judge for himself 

 which is most like the copy ; or he might compare the forms of 

 the engraving or picture with some of the Thistles, and adopt 

 that mode of representing it whiQh approached nearest to the 

 original ; or what would perhaps be better, adopt the handsomest 

 of the common Thistles, and produce a drawing from it, suitable 

 to his purpose. This will not give much trouble. Any one of 

 the commoner kinds, except the Car dims arvensis, might be 

 chosen, and there are but two, the C. lanceolatus and C. palus- 

 tris. Either of them will be an adequate representative of what 

 is conveyed in the motto, " Nemo me impune lacessit.^^ 



IV. Remarks on certain glandular structures in plants. 



In this paper Dr. LaAvson points out that in several instances 

 to which he refers, the glandular secretions were poured out both 

 '^upon the surface and into the cavities of the plant, and not 

 stored up in its constituent cells. ^^ He also shows that both 

 these, both the external and the internal cells, are of epidermal 

 origin. He further remarks that the imbedded gland of the 

 orange bears " the same relation to the gland of the Cinchona, 

 as the conical receptacle of the strawberry does to the hollowed 

 out receptacle of the fig." 



