THE BOTANICAL OUTFIT 35 



6. A simple book on Plant Study. See p. 

 65, where this subject is fully treated. 



7. Magnifying-glass. This is essential, for 

 it is impossible to examine minute flowers with 

 the naked eye. A linen tester makes a cheap 

 and convenient glass. It can be folded up to 

 take into the field and when opened out at home 

 makes a good dissecting glass under which to 

 separate and examine small parts of a flower. 

 Testers may be bought from 25 cents upward : 

 choose one with a strong, clear lens and the 

 largest obtainable opening in the standard. 



8. Sharp Penknife. This is used when dis- 

 secting flowers, a very necessary process if you 

 are to know them thoroughly. The knife must 

 be kept perfectly sharp and clean and must 

 on no account be used for any other pur- 

 pose. 



9. Dissecting Needles. These are easily 

 made, and I cannot do better than quote Pro- 

 fessor Henslow's instructions for mounting 

 two large needles (fours or fives) in pen- 

 holders : 



" Thrust the point into the broad end of a 

 wooden penholder ; then take it out, break the 



