VOL. XXXIX.] PHILOSOPHICAL TRANSACTIONS. 5Q 



Concerning the High Tide in the River Thames, on Feb. J 6, 1735-6. By Mr. 



Tho. Jones N" 440, p. IQS. 



Mr. Jones having in a former Number given an account of the tide's flowing 

 on the 8th of March, 1725-6, which then flowed 20 feet 5-j- inches, as he 

 took it by a level from that high water mark to low water the next morning, 

 and was 4 inches higher than had been known for 40 years before. He now 

 adds, that having marked that high tide on a post, on Monday the l6th instant, 

 (Feb. \(), 1736) the tide rose at the same place 6^ inches above that mark, and 

 flowed near 2 feet the last half hour but one before high water. 



If the tide had flowed its full time, it would have flowed half an hour longer, 

 and would have drowned the whole level. 



A Singular Cutaneous Affection, By Ahr. Vater, M. D. Professor of Anatomy 

 and Botany in the University of fVittemberg and F.R.S. An Abstract from 

 the Latin. N° 440, p. IQQ. 



In the Phil. Trans. N^ 424,* a history is given of a very uncommon case of 

 diseased skin, occurring in a young labourer. A case parallel to this occurred 

 in Germany in a young girl, who had been previously affected not only with 

 swellings of the limbs and body (to which various domestic and empirical reme- 

 dies had been applied) but also with a large, hard tumor between the shoulders, 

 which was removed by discutient applications. But after the discussion of these 

 tumours, a dry and hard crust or scab began to form, on the feet and hands, 

 especially in the soles of the feet and palms of the hands, and this incrustation 

 projected so much from the ends of the fingers and toes, that the patient could 

 neither lay hold of any thing nor walk. The incrustation scaled off at intervals, 

 especially after the use of various ointments ; but at such times the girl was 

 always ill, being swelled in her body, and troubled with a sense of oppression, 

 and griping pains of the bowels, which symptoms continued until the incrusta- 

 tion was removed. She was at length cured by laxative mercurial medicines, 

 and decoctions that purify the blood. Examined by the microscope, the in- 

 crustation appeared to be nothing more than the cuticle expanded and in- 

 durated. Dr. V. was informed of another similar case occurring in a young wo- 

 man, likewise a German, whose hands and feet, with the fore-arm, were 

 covered with a crust or scab, which scaled ofl^ twice a year, and resist'^d all the. 

 remedies which had then been tried. This patient laboured under an ob- 



* Vol. vii, p. 543 of these Abridgments. 

 I 2 



