154 PHILOSOPHICAL TRANSACTIONS. [aNNO 16Q7. 



Account of Booh. — 1. ,-^?i Account of the Nature, Causes, Symptoms, and Cure 

 of the Distempers that are incident to Seafaring People ; with Observations on 

 the Diet of the Seamen in His Majesty & Navy. By JVm. Cochburn. Lond. 

 1696, 8vo* N°226, p. 475. 



2. A Continuation of the Account of the Distempers incident to Seafaring People. 

 By IVm. Cochburn of the Coil, of Physicians, &c. Lond. 'iQ<^7, ^10. 

 N° 226, p. 478. 



3. Recueil de diverses Pieces touchant quelques nouvelles Machines, ifc. Par 

 Mr. D. Papin, Dr. en Med. &c. A Cassel, 1695, in Svo. N° 226, p. 481, 



This treatise contains several discourses and letters, with the descriptions of 

 several engines and machines, with their uses'. The first is what the author 

 names the Hessian pump. The contrivance consists in a cjlindrical Iiollow 

 vessel, in the centre of which is an axis, that carries 2 or 4 flies or sails ; 

 which, being swiftly moved, force the air, or any other fluid contained in the 

 cylinder, from the centre towards the circumference of the cylinder or barrel ; 

 in which circumference is a hole for the fluid to issue out, and likewise another 

 near the centre for a new supply of air or water to come into the cylinder; by 

 which means a constant motion or stream of the fluid is continued, and may 

 be applied to several uses, both for j)leasure and profit ; as, for jet d'eaux, and 

 other raising of water to considerable heights, and is applicable to extinguish 

 fires, &c. Another use is by the air thus forcibly driven out, to give very 

 strong and lasting blasts for iron forges, &c. 



The next letter treats of the several ways of sparing fuel in all works, where 

 the quantity of the fuel much increases the expense ; and this chiefly by a con- 

 trivance to burn the smoke, by causing a draught of air to come, or be forced 

 down the tunnel of the chimney to the fire-place ; which is done by applying 

 the above described engine to the top of the tunnel, which must be closed all 

 but the place where the engine is applied, and a continual stream of air forced 

 down on the fuel by the swift motion of the engine. This he applies to glass 

 works, iron works, brewing, &c. and says i^ of the wood or other fuel may 

 be saved. 



The third letter treats of several inventions to draw the water out of mines, 



* So many better accounts of the diseases of seamen, and of the method of treating them, have 

 been published since the date of this book ; that a detail of its contents would, at this time, be 

 wholly uninteresting. 



