The Chromosomes are responsible for heredity and variation and they control development.  Their study has therefore become necessary for teaching and research in all parts of the life sciences.  This book attempts to show how they have to be handled for such purposes.  Chapters include: Origin; Equipment; Living Chromosomes; bulk fixation; smears and squashes;  paraffin methods;  staining and mounting;  special treatments;  the control of Mitosis;  the control of Fertilization; Photography;  Autoradiography;  Describing the Results;  5 Appendices and Glossary of terms.

An extensive work on classification, pollination, biology, phyletic trend, chromosome counts and genetic relationships.

Currrent details to 1976 on rules of nomenclature and registration

In four parts - Part 1 - The Orchid Family; Part 2 - Culture; Part 3 - the principal cultivated orchids and Part 4 - Hybrids and Hybridization. The book contains pronunciation for each genus and species, photographs and drawings, details of numerous rare orchids, particulars of habitats, cultural instructions and gimmicks to increase the fascination of orchid growing for the beginner.