Show colorados arbor day colo april 17 special under the act of the legislature passed in 1889 the third friday in april is designated as arbor day and this year the observance will be more general than in any previous one owing to the etier ing address issued by colorados woman state superintendent of public instruction mrs peavey and which has been distributed to school teachers and pupils throughout the state in it she saya that plants and trees are the greatest teachers of immortality and that they should be cultivated by all who have humanity in their hearts |