CORRESPONDENCE OF RAY. 17 



what less than a Whewer, of lighter gray colour, the 

 wings and tail longer and sharper pointed, the bill longer 

 and narrower. I have put up some hollow bones which 

 are annexed to the windpipe of each male ; for in females 

 I can find none otherwise than you will find in the paper 

 writ upon Whewer. The difference of shape of these 

 bones, doubtless, causes their different tones. If you 

 steep one of the Sheldin's windpipes a while in warm 

 water to make it lax, you may observe the pretty motion 

 to be found in the middle protuberance, and pick out a 

 little philosophy from it. Whenever I find any farther 

 opportunities of serving you, I will approve myself, &c. 



Cambridge, Feb. 15, 1674. 



Mr. LISTER to Mr. WHAT. 

 M. Lister D. Wray, suo S. 



DE Valetudine tua incommoda vehementer movebar. 

 Etenim cum summam tuam temperantiam atque absti- 

 nentiam tarn probe scirem, omnia de te pejora metui. 

 Idque ea de causa loquor, quod mihi non parum errare de 

 victus ratione videbaris. Is quantum meminerim (teque 

 in ea re, cum Monspelii ad eandem mensam diu hospites 

 una fuerimus religiose observavi) parcissimus, scrupulo- 

 sissimus. Accedit illud tibi, jejunia frequentia, longis- 

 sima: et ut pauci cibi es, ita et rarissimi corporis ha- 

 bitus. 



x. Cal. October, 1667. 



Mr. WRAY to Mr. LISTER, in answer to the preceding Letter. 

 J. Wray D. Martino Lister, suo S. D. 



SYMPTOM A illud de quo non ita pridem apud te con- 

 questus sum (Deo gratias) non ingravescit sed remittit 

 potiiis : me tamen ab eo penitus liberatum iri vix est ut 

 sperem, adeo teneri sunt (ut nosti) et putredini obnoxii 



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