Students will do well to take advantage of this and every similar opportunity to develop their judgment.
It is believed that the reader who follows this text carefully as a guide may learn much that may not strictly be classed as arithmetic. If the manner in which the subject is treated and the many applications made inspire the practical worker and the beginner to seek a better understanding of the fundamentals of carpentry, the author's most sanguine hopes will be justified.
As a text in vocational mathematics it is believed that this little volume should find a place in vocational and industrial schools, trade schools, manual training schools and night schools. It is also well adapted for use in correspondence instruction. The material has been used by the author in the Vocational Courses in Engineering at the Iowa State College and also in the extension classes of the Department of Engineering Extension in various cities in the state of Iowa.
No single book is the entire and original product of one man's mind; it consists rather of accumulated knowledge interpreted and adapted for a particular purpose. The author gratefully acknowledges assistance rendered knowingly and unknowingly by many others. Material borrowed from other sources is acknowledged in the text. The author's appreciative thanks are due his colleague, Mr. H. E. Freund, for reading the manuscript, and to Prof. K. G. Smith for many suggestions and kindly criticisms. Indebtedness is also acknowledged to Sargent & Company for permission to use illustrations of their steel square.
R. BURDETTE DALE. AMES, Iowa,
April, 1915.