AQUATIC COLLECTING 11 



convenience both to student and to instructor, therefore do not 

 miss a field trip if it can be avoided. 



7. Tardiness counts as absence on these excursions, as the 

 class starts promptly on the hour. 



8. For aquatic collecting each student should have the fol- 

 lowing equipment, the first two items of which are furnished 

 by the laboratory: 



(1) A dip-net 



(2) A quart Mason fruit jar with lid and rubber 



(3) A pair of forceps with string attached 



(4) CAR FARE 



(5) Notepaper and pen or pencil 



9. In the laboratory before the trip you will be given defi- 

 nite directions for note taking, and all field notes must conform 

 to the directions as given. 



10. The use of the dip-net will be demonstrated in the field 

 before the collecting begins. 



11. Write a general description of the region before you 

 begin to collect. Describe fully and carefully the main features 

 of the locality examined. This should be full enough to give a 

 stranger a fair idea of the locality. It should include the ap- 

 proximate size of the stream, character of its banks, bottom, 

 depth of water, vegetation, etc. 



12. Fill the Mason jar two-thirds full of water before be- 

 ginning to collect, and preserve the animals collected in the jar. 



13. Wash the mud from the net as directed before attempt- 

 ing to sort over and examine the collection. Sort the materials 

 upon the bank of the stream, in the net, and throw the refuse back 

 into the stream. 



14. Rinse out the net before leaving the field. 



