14 GRAHAM LUSK 



October 14 to 19 lived freely on animal food. 



October 21 to 28, bread, water and boiled beef. "Never the least 

 heavy or dull, . . . but had a keenness for study." 



October 28 to November 1, diet of bread, water and sugar. The gums 

 were not affected by the sugar. 



November 17 to 20, lean beef, 20 oz. Upon this diet he felt hungry. 



November 21 to 25, lean beef, 20 oz., and suet, 7 oz. "I slept longer 

 and more quietly than formerly and was more disposed to be drowsy 

 than when I lived on meat alone." 



November 26 to December 8, flour, 20 oz. ; suet, 4 to 6 oz. This diet 

 was arranged in order to compare its value with that of meat. It was 

 taken in the form of a pudding. He notes an extraordinary gain in 

 body weight of 8 Ibs., in five days after changing the dietary from meat 

 to flour, (vide later experiments of Voit, p. 70). 



December 9 to 13, flour, 24 oz. Upon this diet he became extremely 

 hungry. 



He finds that flour and beef suet disagree with him, tries to substitute 

 butter fat for beef suet, but does not return to a normal appetite until 

 he has enjoyed eating two pounds of figs. In another experiment he has 

 indigestion after taking for four days puddings made of flour and butter. 



February 4 to 15. Bread and flour with honey. Scorbutic symp- 

 toms developed on February 12. Honey pudding had a remarkable diu- 

 retic effect and provoked diarrhea. 



On February 15 he was feeble and took an infusion of rosemary. 



February 16 and 17. Diet bread with Cheshire cheese to check the 

 diarrhea, which it did. 



February 18 he omits cheese but continues with the infusion of rose- 

 mary. His mouth is sore, there are pimples at the corner of his mouth 

 and many large ones on his body. 



This closes his diary. 



On February 18 he was bled, but died on February 23, 1770, evi- 

 dently of acute intestinal infection, the victim of his scientific curiosity. 

 John Hunter made a report of the findings at the autopsy. 



The Chemical Revolution 



Out of the misty conclusions of the middle of the eighteenth century 

 before its close modern chemistry developed. The work of Mayow was 

 forgotten in the enthusiasm over the phlogiston doctrine of Stahl. The 

 pioneer discoverer was again an Englishman, Joseph Black. It is quite 

 probable that had Mayow known of Black's "fixed air" he might have 

 solved the problem of respiration. And also had Black known of the 

 existence of Mayow's experiments without having learned of them to his 



