[1] Paragraphs adapted from Teachers' Leaflet, No. 6, May 1, 1897, and from subsequent publications.

[2] From Bull. 206, Sixth Report of Extension Work, 1902.

[3] Reprinted from the Proceedings of the National Educational Association, 1903. Paper read in general session at Boston, July, 1903.

[4] Supplement to Home Nature-Study Course, March, 1904. (Vol. V, No. 6.)

[5] Cornell Countryman, June, 1904.

[6] Syllabus of Lectures: Nature-Study (Animal and Plant Life), Mrs. A. B. Comstock.

[7] This list comprises some of the books that have been helpful to me. It is not intended to be complete. Good new books are constantly appearing. The teacher should endeavor to keep up with the new books.

[8] Teachers' Leaflet, No. 14: Cornell Nature-Study Bulletin, June, 1899.

[9] Home Nature-Study Course, December, 1903.

[10] Nature-Study Quarterly, No. 2: Leaflet 15.

[11] Nature-Study Quarterly, No. 2: Leaflet 15, October, 1899.

[12] Nature-Study Quarterly, No. 5: Leaflet 18. June, 1900.

[13] Nature-Study Quarterly, No. 5: Leaflet 18, June, 1900.

[14] These and other forms found in still or slow flowing water are described and pictured in Leaflet No. XII, Life in an Aquarium.

[15] Figures 52, 53 and 54 are adapted from Dr. R. Leuckart's Zoological Charts.

[16] Teachers' Leaflet No. 11. May, 1898.

[17] Nature-Study Quarterly, No. 8: Leaflet 21. January, 1901.

[18] Nature-Study Quarterly, No. 4: Leaflet 17. March, 1900.

[19] Nature-Study Quarterly, No. 9: Leaflet 22. May, 1901.

[20] Teachers' Leaflet, No. 9, May, 1897.

[21] It was the desire of the author to tell the story of this leaflet in pictures as well as in words, and he wishes to express his appreciation of the enthusiasm and ability with which the illustrations were executed by Mr. C. W. Furlong.

In this edition are added half-tone reproductions of photographs to bring out more completely the life story.

[22] Nature-Study Quarterly No. 8: Leaflet 21, January, 1901.

[23] Teachers' Leaflet No. 7, June, 1897.

[24] Teachers' Leaflet No. 5, June, 1897.

[25] If a specimen of the moth could be obtained, it would be much more interesting to the children than the picture. The teacher can collect or breed the moths in July to use the next spring to illustrate the lesson.

[26] Home Nature-Study Course, Vol. IV, No. 23, May, 1902.

[27] Home Nature-Study Course, Vol. V, No. 1. October, 1903.

[28] Home Nature-Study Course, Vol. V, No. 8, May, 1904.

[29] Teachers' Leaflet No. 10, May, 1898.

[30] Nature-Study Quarterly, No. 4: Leaflet 17, March, 1900.

[31] Home Nature-Study Course, Vol. IV, No. 30, March, 1903.

[32] Home Nature-Study Course, Vol. IV, No. 31, April, 1903.

[33] Home Nature-Study Course, Vol. IV, No. 32, May, 1903.

[34] Home Nature-Study Course, Vol. V, No. 3, December, 1903.

[35] Home Nature-Study Course, Vol. V, No. 4, January, 1904.

[36] Home Nature-Study Course, Vol. IV, No. 27, December, 1902.

[37] Quiz on Lesson No. 27, December, 1902.

[38] Teacher's Leaflet No. 1, December, 1896. The first Cornell nature-study leaflet. For a discussion of the title of this leaflet and what it signifies pedagogically, consult "The Integument Man," in "The Nature-Study Idea." (Doubleday, Page & Co.)

[39] Note.—Common ink will not answer for this purpose because it "runs" when the root is wet; indelible ink, used for marking linen or for drawing, should be used. It should also be said that the root of the common pumpkin and of the summer bush squashes is too fibrous and branchy for this test. It should be stated also that the root does not grow at its very tip, but chiefly in a narrow zone just back of the tip; but the determination of this point is rather too difficult for the beginner, and, moreover, it is foreign to the purpose of this tract.

[40] Teacher's Leaflet No. 12, January, 1899.

[41] Teacher's Leaflet, No. 12, January, 1899.

[42] Teachers' Leaflet No. 3, March, 1897.

[43] It is really impossible to tell whether the shoot started from the limb A in 1889 or 1890, without knowing the age of A; for the spur may have developed its blossom bud at the end in either the first or second year of its life. That is, young fruit-spurs sometimes make a blossom bud the very year they start, but they oftener "stand still" the second year and delay the blossom bud until that time.

[44] Nature-Study Quarterly No. 4, Leaflet 17, March, 1900.

[45] Teacher's Leaflet No. 13, February, 1899.

[46] Home Nature-Study Course, Vol. V, No. 8, May, 1904.

[47] Pronounced Trifol' -ium praten' -se, the second or specific name with three syllables.

[48] Home Nature-Study Course, New Series, Vol. I, No. 1, October, 1904.

[49] Nature-Study Quarterly No. 6: Leaflet 19, October, 1900.

[50] Nature-Study Quarterly, No. 8: Leaflet 21, January, 1901.

[51] Nature-Study Quarterly No. 3: Leaflet 16, January, 1900.

[52] Teachers' Leaflet No. 4, April, 1897.

[53] Nature-Study Quarterly, No. 7: Leaflet 20, January, 1901.

[54] Home Nature-Study Course, Vol. IV, No. 30, March, 1903.

[55] Home Nature-Study Course, Vol. IV, No. 31, April, 1903.

[56] Home Nature-Study Course, Vol. IV, No. 32, May, 1903.

[57] Home Nature-Study Course, Vol. V, No. 1, October, 1903.

[58] Extracted from an article by L. H. Bailey in Country Life in America, July, 1903.

[59] Home Nature-Study Course, Vol. V, No. 4, January, 1904.

[60] Silage is often put up when the corn is more mature, and then the water content is less than here given.

[61] Included with nitrogen-free extract.

[62] Home Nature-Study Course, Vol. IV, No. 29, February, 1903.

[63] Home Nature-Study Course, Vol. IV, No. 20, February, 1902.

[64] Home Nature-Study Course, Vol. V, No. 2, November, 1903.

[65] Home Nature-Study Course, Vol. V, No. 5, February, 1904.

[66] Home Nature-Study Course, Vol. V, No. 2, November, 1903.

[67] Supplement to Junior Naturalist Monthly, February, 1902.

[68] Junior Naturalist Monthly, December, 1903.

[69] Junior Naturalist Monthly, February, 1903.

[70] Alice G. McCloskey, Junior Naturalist Monthly, January, 1904.

[71] Junior Naturalist Monthly, January, 1903.

[72] Junior Naturalist Monthly, February, 1904.

[73] Extended from Junior Naturalist Monthly, February, 1901.

[74] Junior Naturalist Monthly, March, 1903.

[75] Junior Naturalist Monthly, April, 1903.

[76] Supplement to Junior Naturalist Monthly, May, 1904.

[77] Junior Naturalist Monthly, November, 1903.

[78] Junior Naturalist Monthly, May, 1903.

[79] Junior Naturalist Monthly, October, 1903.

[80] Junior Naturalist Monthly, October, 1904.

[81] Junior Naturalist Monthly, November, 1903.

[82] Introduction printed in Junior Naturalist Monthly, March, 1901.

[83] Junior Naturalist Monthly, February, 1904.

[84] Junior Naturalist Monthly, December, 1903.

[85] Junior Naturalist Monthly, January, March, April, and May, 1903.

[86] Junior Naturalist Monthly, January, 1903.

[87] Junior Naturalist Monthly, March, 1903.

[88] Junior Naturalist Monthly, May, 1903.

[89] Junior Naturalist Monthly, February, 1901.

[90] Extended from Junior Naturalist Monthly, November, 1902.

[91] Nature-Study Quarterly, June, 1899.

[92] Junior Naturalist Monthly, October, 1902.

[93] Junior Naturalist Monthly, March, 1902.

[94] Junior Naturalist Monthly, February and March, 1901.

[95] Junior Naturalist Monthly, October, 1903.

[96] Junior Naturalist Monthly, May, 1904.

[97] Junior Naturalist Monthly, June, 1903.

[98] Supplement to Junior Naturalist Monthly, April, 1902.

[99] Nature-Study Quarterly, October, 1899.

[100] Nature-Study Quarterly, October, 1899.

[101] Junior Naturalist Monthly, December, 1904.