PREFACE vii 



text may be made as clear as possible but also that the student may- 

 acquire some familiarity with the names and contributions of the 

 better known embryologists, both past and present. While most 

 of the copying and redrawing was done by me personally, I am 

 glad to acknowledge the very able assistance I received from a few 

 friends. Figures 36, 68, 92, and 214 were drawn by Mrs. J. A. 

 Adams of Poughkeepsie, N. Y., daughter of my former teacher, 

 the late Dr. Winfield Dudgeon of Allahabad; Miss C. Pratt, 

 Harvard University, drew Figures 24, 41, 59, 65, 74, 89, 104, 118, 

 121, and 167; Dr. B. G. L. Swamy, Bangalore, drew Figures 19, 

 145, 149, 150, 153, and 163; Mrs. M. S. Cave, University of Cali- 

 fornia, drew Figure 14; Miss C. G. Nast, Wayne University, drew 

 Figure 111; and my former research assistant, Ashraful Haque, 

 University of Dacca, drew Figures 21, 43, 47, 54, 60, 61, 82, 85, 

 91, 147, 148, 152, 154, 157, 158, 159, 161, 162, 164, 165, 170, 172, 

 173, 175, 191, and 216. To all these I wish to tender my most 

 grateful thanks for the willingness with which they cooperated 

 with me. 



A word about the citation of literature. No attempt has been 

 made to give a complete list of all that has been published on 

 angiosperm embryology, as this would make the volume too cum- 

 bersome, but it is hoped that the references which have been cited 

 will facilitate the task of the student who wishes to acquire fuller 

 information. 



In a work of this nature it is unavoidable that there should be 

 some errors of judgment and also oversights and omissions. I 

 should appreciate the suggestions and criticisms of those who use 



the book. 



P. Maheshwari 

 University of Delhi, India 

 July, 1950 



