POWDERED DRUGS. 
267 
I Calcium- Ox (date Crystals wanting. 
A. Cystoliths of calcium carbonate present. 
Secretion and non-secretion hairs . . 22. Cannabis Indiea 
Starch grains numerous 23. Spigelia 
B. Calcium carbonate crystals wanting. 
a. Secretion and non-secretion hairs present, 
a Fragments of pappus present. 
Pollen grains 10-20 n 24. Eupatorium 
Pollen grains about 25 y 25. Grindelia 
/3 Fragments of pappus wanting. 
1. Secretion hairs with one to two-celled head. 
Non-secretion hairs characteristic 26. Digitalis 
2. Secretion hairs with one to eight-celled head. 
Odor characteristic 27. Hedeoma 
Non-secretion hairs twisted 28. Marrubiuin 
Odor characteristic 29. Mentha Piperita 
Non-secretion hairs characteristic 30. Salvia 
b. Secretion hairs wanting. 
a With non-secretion hairs. 
Pollen grains and fragments of seeds .... 31. Lobelia 
Pollen grains and fragments of seeds wanting, 
32. Scoparius 
/9 Non-secretion hairs w anting. 
Starch grains present 33. Cardamomum 
Without starch grains 34. Staphisagria 
Powders of a Yellowish Color. 
I. Fragments of Vegetable Tissue present. 
A. Containing starch. 
a. With calcium-oxalate crystals. 
a In rosette-shaped crystals. 
Crystal fibers 35. Frangula 
Isodiametric stone cells 36. Galla (Aleppo) 
Starch grains swollen 37. Jalapa 
Calcium -oxalate crystals 50-100 y 38. Rheum 
£ In monoclinic prisms. 
Characteristic starch grains 39. Calumba 
Starch grains swollen 40. Curcuma 
Crystal fibers 41. Frangula 
Long sclerenchvmatous fibers 42. Gelsemium 
Tracheae with bordered pores 43. Quassia 
7 In crystal fibers. 
Without cork fragments . . . 44. Glycyrrhiza (Russian) 
