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among our southern negroes, not for its medicinal value, but 
for its odor and the belief that if carried about the person, it will 
ward off illness and bring good luck. 
Under the sub-heading “Poisoning from Honey,” it is stated 
that Kalmia latifolia, Robinia pseud-acacia, Euphorbia marginata, 
and species of rhododendron have been proved as sources of 
poisonous honey. The above facts should prove of value to 
bee keepers. The source of the honey of the market is not known 
except in a general way as clover, buckwheat, etc. А micro- 
scopic examination of honey will often reveal its source through 
the presence of characteristic pollen-grains. 
The eleventh chapter is pure toxicology, giving a classification 
of poisons with symptoms and antidotes. 
In Chapter XII, under “Distribution of Poisonous Substances 
in Plants," Dr. Pammel speaks of some of the conditions govern- 
ing the formation (elaboration) of poisonous substances, i. e., 
light, heat, seasons, climate and cultural conditions. The time 
(season) of collecting medicinal plants is of first importance. 
This time varies with different drugs. The reviewer usually 
groups the plant parts for purposes of collection as follows: 
tubercules, tubers, bulbs, rhizomes, and roots should be collected 
at the close of the growing season; barks in the fall, after the 
death of the foliage, or before the spring foliage is fully developed; 
flowers, just before expanding; leaves and herbs, just at the 
beginning of the flowering period and most of the fruits when 
immature, but full-grown, and the seeds when mature. Under 
“Culture” it is stated that cultivation often entirely eliminates 
the poisonous constituent. Lyanthus, Phaseolus lunatus and 
Aconitium napellus are cited as becoming less toxic under cultiva- 
tion. This latter statement would seem to be disproved by the 
fact that the British Pharmacopoeia requires British pharmacists 
to use only cultivated aconite grown in England. Also much 
of the golden-seal of the market is collected from cultivated 
plants. Analyses show the alkaloid in cultivated golden-seal 
to be present in even greater amounts than in the wild variety. 
This shows that no definite law can be given. One of the most 
important factors in increasing the percentage of active con- 
