VEGETABLE PURGATIVES CONTAINING ANTHRACENE DERIVATIVES
In Part I of this series of papers1 reference was made to a preliminary test on an extract of Senna pod which was found to contain only about 5 per cent. of its theoretical activity. Biological and chemical tests have since been carried out on a number of galenical preparations of senna pod and the results have confirmed that only a small proportion of the activity of the pod is present in these concentrated preparations. The ultimate aim of the work described in this paper has been to devise a method of preparing an extract representing the full activity of the pod from which it was made, and as a result, it has been possible to set out the principles underlying efficient extraction and concentration processes.
The distribution of anthraquinone glycosides in Cassia senna L.
Abstract The distribution of rhein-type and aloe-emodin type anthraquinone glycosides in developing Cassia senna L. plants has been studied. The seeds contain no anthraquinones but shortly after germination chrysophanol, then aloe-emodin and finally rhein are formed in the young plant. In the presence of adequate light, glycosylation follows and significant quantities of glycosides appear in the young leaves. These are probably translocated to the flowers and ovaries since large concentrations of glycosides accumulate there. During fruit development the amount of aloe-emodin glycoside in the pericarp falls when the seeds become separable from the pericarp and the amount of rhein glycoside falls markedly when the seeds mature and become viable. It is suggested that in this plant anthraquinone production is intimately associated with fruit and seed development.
Atiyah's Introduction to the Law of Contract
1. Introduction 2. Definition and Classification PART I: FORMATION OF CONTRACTS 3. Offer and Acceptance 4. Beyond Offer and Acceptance: Formalities, Intent to Create Legal Relations, and Consideration PART II: THE CONTENT OF THE CONTRACT 5. Express Terms 6. Implied Terms 7. The Force and Scope of Contractual Obligations: Standards of Care, Mistake, Frustration, Breach, and Notice 8. Unenforceable Contracts and Terms PART III: EXCUSES FOR NON-PERFORMANCE 9. The Duty to Disclose Material Facts 10. Misrepresentation 11. Duress and Undue Influence 12. Unfair Contracts PART IV: ENFORCING THE CONTRACT 13. Third Party Rights 14. Remedies For Breach of Contract