Popular Scirnce Mouthh) 



^l\ 



A natural shelter worn away by the persistent grinding action of pebbles and sand thrown 

 against the rocks by the splashing of waves 



How Sea Caves Are Made 



C(X\SrA.\r warfare is bcingwagcd 

 between water and soil. The photo- 

 graph shows a rocky recess in a friable 

 sandstone which has been excavated by 

 the scour of currents and beating of 

 waves along an arm of the sea on the 

 east side of Vancou\er Island. The bed 

 which the waves ha\'c cut away 

 is ()I)viously of softer slonc than 

 the underlying one, \\\ 

 overlying layer is hard 

 resistant and sufhcient 

 inassive to overhang 

 for some distance. 



The view is an 



excellent illustra- 

 tion of shore 



erosion. It is not 



exactly correct, 



however, to speak 



of waves orrunning 



water as scouring 



and grinding 



agents. Water 



alone has little 



power to erode 



stone but it is a 



potent grinder. it is a wise ewe that 



A Lamb with Two Coats of Wool 



I^HE little lamb in the picture has 

 two coats of wool, but only one of 

 them is his own. A ewe is disinclined 

 to adopt some one else's children, even 

 if her own do die. To deceive her into 

 the belief that her own lamb is still 

 li\ing, its pelt has been used as a coat 

 for another lamb. She recognizes 

 the pelt by the smell, and 

 es it to be her !aml). 

 he adopted lamb is a 

 in or if its mother is 

 lead, this arrangement 

 is greatly to its 

 advantage, but 

 once the mother 

 disco\ers that she 

 has been made the 

 \ictim or the 

 "goat," she leaves 

 the aflopted young 

 to its own destiny 

 and refuses there- 

 after to have an\'- 

 thing to do with 

 it, even though its 

 pelt be changed 

 again. 



knows her own lamb 



