CHAP. XXVTII.] RAPID EFFECTS OF POISONS. 383 



that they enter the blood, and with it are whirled with immense 

 velocity through the substance of the most vital organs. 



On the subjects discussed in the preceding chapter, the reader is referred to 

 the various systematic works on Physiology, to the supplement lately pub- 

 lished by Valentin, and to Dr. Allen Thomson's very comprehensive article 

 " Circulation," in the Cyclopaedia of Anatomy and Physiology. On the 

 anatomy and physiology of the heart, Kurschner's article in Wagner's Hand- 

 worterbuch, and Dr. Jno. Reid's article in the Cyclop, of Anat. may be con- 

 sulted ; and as regards its motions and sounds, we refer to the reports of the 

 Committee of the British Association collected in the Appendix of Dr. C. J. 

 Williams' work on Diseases of the Lungs, to Dr. Blakiston's admirable work 

 on Diseases of the Chest, to Dr. Walshe on Diseases of the Heart and Lungs, 

 and Dr. Herbert Davies on the same subject ; and on the physics of the 

 circulation to Hale's Statical Essays, vol. ii. ; to Dr. Young's Croonian Lecture 

 on the Functions of the Heart and Arteries, Phil. Trans. 1809, and medical 

 Literature, p. 605 ; Poiseuille sur la Force du Coeur Aortique in Magendie's 

 Journal, vol. viii., and his essay, Recherches sur 1'Ecoulement des liquides 

 conside~re~ dans les Capillaires Vivans, in the Jour, des Sc. Nat. 1843 ; to the 

 Essays of Ludwig, Spengler, and Mogk, in Miiller's Archiv. ; Magendie, Le9ons 

 sur les Phnomenes Physiques de la Vie, and especially to the very able work 

 of Volkmann, Die Haemodynamik nach Versuchen, Leipzig, 1850, which we only 

 received when these pages were in type. The following works may also be 

 mentioned as containing interesting matter relating to the circulation in 

 general : Dr. Grave's Clinical Lectures, lect. i. on the Circulation ; Dr. Todd's 

 three Clinical Lectures on the Pulse, Lond.Med. Gaz. 1851 ; Draper on the 

 Forces which produce the Organization of Plants, New York, 1845; Prof. Jno. 

 Reid's Essay on Asphyxia in his Physiological and Pathological Researches, 

 ed. 1848. 



