COLOUR, FORM, AND MOVEMENT. 67 



although crystals grow they do so by the addition of par- 

 ticles of the same substance to the outside growth by accre- 

 tion whereas plants and animals grow by the addition of 

 substances which are dissimilar and by addition from the 

 inside growth ~by assimilation. 



Summarise the studies on form by appealing for appre- 

 ciation of nature type forms, particularly animal and plant. 

 But scenery should not be neglected. This appreciative 

 spirit should run through all nature studies its develop- 

 ment tends to the culture of aesthetics. 



THE SWIMMING FISH. 

 A STUDY OP MOVEMENT. 



We have before us in a large glass bowl some golden 

 carp. Let us watch them for a little. As with the bird in 

 the air, so with the fish in the water, we cannot but admire 

 the ease of movement, the mastery of the medium in which 

 the creature lives. Our fish may not be the best to typify 

 the various activities of fish in general which we might 

 have, but at the moment they are the most convenient. 

 The gold fish are slow, trout in captivity even show more 

 activity ; for dash and perfect grace of movement the 

 salmon or any of the more active sea species, e.g. the 

 spotted dogfish, afford in their natural haunts a very fine 

 sight. 



Let us, however, watch our gold fish. Lazily they move, 

 sometimes suddenly dashing forward, at 'other times they 

 poise stationary, they rise, they fall. We become conscious 

 that movement is effected with slight effort. What are 

 the special adaptations fitting them to live in water ? 

 And while we seek to enumerate some of them we shall 

 think not only of the gold fish before us, but of fish in 

 general. 



