TABLE OF CONTENTS 



PART I. 



PAGE 



Preface vii 



Supplementary and Complementary Researches. The Trend of Modern Biological Sciences. General Thoughts underlying 

 these Researches. Inter-relationships between Molecular Configuration of Various Substances and Protoplasm. 

 Biologic Propositions. Relations of Various Substances to Biologic Classification. Differences in the Methods 

 Employed in these Researches. Forecast of Further Research. Unit-Characters and Unit-Character-Phases of 

 Starches and Plant Tissues. Physics and Physical Chemistry in their Bearings on the Development of Biologic Sciences. 



Chapter I. Introduction 3 



1. Objects of the Research 3 



2. Criteria of Mutants and Hybrids. A Foreword 3 



3. Intermediateness and Lessened Vitality of Hybrids etc. (Macfarlane) 4 



Intermediateness of Histologic Properties of Hybrids 4 



1. Average Organismal Development and Deviations 4 



2. Limit of Variability 5 



3. Comparison of Similar Parts 5 



4. Available Limit for Comparison of Parents with their Hybrid Progeny 5 



5. Relative Stability of Parent Forms • 6 



Intermediateness of the Starches of Hybrids 7 



Intermediateness of the Macroscopic Properties of Hybrids 10 



First Proposition of Focke 10 



Second Proposition of Focke 11 



Third Proposition of Focke 12 



4. Partial or Complete Sterility of Hybrids .' 13 



Fourth Proposition of Focke 13 



Fifth Proposition of Focke 15 



5. Instability and Mendelian Inheritance of Hybrids and Mutants 18 



6. Genetic Purity in Relation to Intermediateness of the Hybrid 20 



7. Theoretic Requirements in the Properties of Starches to Conditions in the Hybrid corresponding to those of Anatomic 



Characters 20 



8. Unit-Characters and Unit-Character-Phases 21 



9. Assistants 22 



Chapter II. Methods Used in the Study of Starches 23 



1 . Preparation of the Starches 23 



2. Simultaneous Studies of Starches of the Parents and Hybrid and of the Members of a Genus 23 



3. Histologic Method 23 



4. Photomicrographic Records 23 



5. Reactions in Polarized Light, Without and With Selenite ' 24 



6. Iodine Reactions 24 



7. Aniline Reactions 25 



8. Temperatures of Gelatinization 25 



9. Action of Swelling Reagents 26 



10. Constancy of Results Recorded by the Foregoing Method 28 



11. Reagents Used in Qualitative Investigations 28 



12. Charts of Reaction-Intensities of Different Starches 29 



13. Comparative Valuations of the Reaction-Intensities 30 



Chapter III. Histologic Properties and Reactions 31 



Comparisons of the More Important Data of the Histologic Properties and the Polariscopic, Iodine, Aniline, Temperature, 



and Various Reagent Reactions of the Starches of Parent- and Hybrid-Stocks 31 



1. Comparisons of the Starches of Amaryllis belladonna, Brunsvigia josephinae, Brunsdonna sanderoe alba, and 



Brunsdonna sanderoe 32 



Notes on Amaryllis, Brunsvigia, and Brunsdonna 37 



2. Comparisons of the Starches of Hippeastrum titan, H. cleonia, and H. titan-cleonia 40 



3. Comparisons of the Starches of Hippeastrum ossultan, H. pyrrha, and H. ossultan-pyrrha 42 



4. Comparisons of the Starches of Hippeastrum daaones, H. zephyr, and H. dasones-zephyr 44 



Notes on the Hippeastrums 46 



5. Comparisons of the Starches of Haemanthus katherinae, H. magnificus, and H. andromeda 47 



6. Comparisons of the Starches of Ha;manthus katherinae, H. puniceus, and H. konig albert 48 



Notes on the Haemanthuses 50 



7. Comparisons of the Starches of Crinum moorei, C. zeylanicum, and C. hybridum j. c. harvey 51 



8. Comparisons of the Starches of Crinum zeylanicum, C. longifolium, and C. kircape 53 



9. Comparisons of the Starches of Crinum longifolium, C. moorei, and C. powellii 56 



Notes on the Crinums 58 



10. Comparisons of the Starches of Nerine crispa, N. elegans, N. dainty maid, and N. queen of roses 58 



iii 



