146 HOUSE, GARDEN, AND FIELD 



4. Bring specimens of two or three moorland grasses, 

 and observe how they differ in general appearance from 

 meadow-grasses. 



5. A low coniferous tree, with a fruit like a berry, will be 

 passed. Bring a branch of this. 



6. Two kinds of crowberry, male and female, will be met 

 with. Bring a specimen of each. 



7. There is a small water-plant, which is only found in 

 this district in springs, just, where they break from the 

 ground. Bring some of this. 



8. Find a bilberry in flower, and notice how the pollen 

 escapes from the anthers. Do you observe any other 

 peculiarity about the anthers ? 



Let us next examine the animal life of a brook flowing 

 through a rocky glen. 



EXCURSION PROGRAMME. No. Ill, 



1. Search the pebbles in the brook for the freshwater 

 limpet (Ancylus), and bring an example in a glass tube. 



2. Find a caddis- worm whose case is made of small 

 shells, and another whose case is made of sticks and straws. 

 Bring specimens in tubes. 



3. In the mill-dam specimens of Cyclas can be got by 

 dredging. Bring one of these. 



4. Colonies of a freshwater Polyzoan are to be found in 

 the same place, clinging to twigs under water. Bring a 

 small piece. 



5. Just above the mill a thread of water trickles into the 

 brook over a bank of tufa. Here is a little pool, where the 

 green Hydra is usually met with. Break off a little of the 

 tufa, with a Hydra attached. 



6. Two leeches are common in the brook, and will often 

 be lifted out with the stones. Bring specimens. 



7. Just above the waterfall the stones are covered with 

 Simulium-larvae. Bring a stone with attached larvae. 



8. In the Alisma-pond near the waterfall a large pond- 



