INTRODUCTION. 3 



In addition to these things in many laboratories it is 

 quite desirable to add materials with which specially pre- 

 pared permanent mounts are made. Such a list should 

 include : 1 



16. A microtome. 



17. An imbedding -oven. 



18. Paraffin. 



19. Various reagents, as xylol, clove-oil, bergamot-oil, 

 cedar-oil, absolute alcohol, and Canada balsam. 



20. Stains, as Delafield's haematoxylin, cyanin, erythro- 

 sin, iron alum, bismarck brown, etc. 



21. Glassware designed especially for work in staining 

 and mounting microtome sections. 



Each student will need : 



22. Hand-lens, or dissecting-microscope. 



23. Compound microscope. 



24. Razor. 



25. Small pair of forceps. 



26. Dissecting-needles. 



27. Medicine-dropper, or pipette. 



28. Syracuse watch-glass, or other small glass dish. 



29. Glass slides and cover-slips. 



30. Blotting or filter paper. 



31. A clean soft cloth for cleaning the microscope and 

 drying slides and cover- slips; also lens-paper for 

 cleaning the lenses. 



32. Drawing materials, consisting of good paper and a 

 medium hard pencil. A fine pen such as a litho- 

 graphic pen and India ink may be added with profit. 



1 For complete list of things needed see Chamberlain's " Methods in 

 Plant Histology." 



