Instruction on the making of Bread from damaged Grain. 191 



covered with a black matter, and still more so when I found the 

 strange substance of which it was chiefly composed. I became 

 of course extremely anxious to learn its history. But this is 

 all that I could obtain from Mr.B. "That it had been in his pos- 

 session four or five years, and that the person who gave it to him 

 told him that it was extracted by a Mr. Pye, and Mr. B. did 

 not doubt that a human subject was implied." 



Some gentlemen who have seen it imagine that it might 

 have been taken from a watering-place in a street : but I have 

 submitted substances to a trial of pouring urine upon them, and 

 find the appearance entirely different. In the latter instances 

 there is an even uniform stratum super stratum ; whereas in 

 this calculus there is a distinct tubercular appearance, resembling 

 those denominated mulberry. Again : in the one case the layers 

 are tender and easily brushed off, but here they are excessively 

 firm. 



One circumstance is not unworthy of remark, which is — that 

 out of more than one hundred and fifty sets of calculi in my 

 museum, this is the only one with the tubercular appearance 

 which does not contain oxalic acid. 



I remain, dear sir, yours truly, 



S3, Park Street. RlCHARD SmITH. 



To Dr. IV. H. Gilly. 



This calculus certainly contains no oxalate of lime, as it dis- 

 solves completely in dilute acetic' acid ; whereas oxalate of lime 

 is insoluble in that acid. 



XLVIII. j^hs tract of ^' Instruction concerning the Making of 

 Dread I mm damaged Corn. Framed by a special Commission 

 named by His Excellency the Secretary of Stale for the De- 

 partment of the Interior, vnd composed of Messrs. Gau, Hir^ 

 norary Counsellor of State, President; Morel de Vitsdh, 

 Peer of France ; St. Martin, Commissary General of HoS' 

 pitals; Bosr, Yvart, Thenaud, Gav Lussac and Sjl- 

 VESTRK (Secretary), jMcmbers of llie Royal Academy of 

 Sciences," Published 2Sth Feb. 1817. 



1 HE continual rains which have fallen this year during the 

 months of July, August, and September ", have rendered the la- 

 bours of the harvest diHicult, and have affected a part of its pro- 

 duce. 



• III tlie months of .Iiilv and Aiimist 1810, alioiil tlircp thncA as much 

 rnin,:in'l in tlio iiioiitli of .September iiljout twice as much, fell, as in tliccor- 

 it-Hpiiiidini; iiiohths of the year 18l;>. liie mean tcnipciiilnrt; for the 

 nine first miiiithM of 1316 was two dcfjrcib less liiaii t!ial of the nine first 

 months of I8I0, 



A crop 



