ENGRAVINGS. 



Machine for drawing Bolts in and out of Ships — Cit. Guyton's 

 Eudiometer ; the improved Machine for Cutting Chaff, invented 

 by Mr. Robert Salmon, of Woburn, Bedfordihire, for which 3 

 - Bounty was Voted to him by the Society for the Encouragement 

 X)f Artp, &c. — Tli£ new Macliine invented and employed by the 

 late Mr. Cuftance to make his imrivalled Vegetable Cuttings for 

 the Microfcope ; drawn and engraved from tjie Machine itfelf, now 

 in the pofTeflion of Dr. Thornton ; a Plate to explain the Method 

 lOif forming figures with Sand on Vibrating Surfaces, according 

 to Dr. Chladni's Theory— The Furnace employed by the French 

 Cheitiills in their Examination of C. Clouet's Proc.fs for the im- 

 mediate Converfion of Iron into Caft Steel by means of Carbonat 

 of Lime i and the New Steel-Yard invented by C. Paul of Geneva. 



Number XIII/^s illuftrated with a Plate of Figiires to explain 

 Volta's Theory^f Galvanifra— Apparatus employed by Dr. Van 

 Marum foj:,tt:f Combuftion of Phofphorus in Oxygen Gas. 



Number XIV. is illuftrated with a 4to Plate relative to the 

 Strufture of the Cryftals of Oxyde of Tin^ — and a Plate illullrating 

 the bed Conftrijftion of the Vanes of Windmills as far as conijerns 

 the Angle of Weather. 



Number XV. is illuftrated with a Plate of Mr. Mnfhet's Pyro- 

 meter for afcertaim'ng the Heatfof an AiTay-furnace — Von Hauch's 

 New Difcharging EleftrOmeter, laid before the Royal Society ot 

 Copcpjiageh — ana, Hunibolt's Portable Barometer for Travellers, 

 &c. 



CONTENTS of NUMBER XVI. 



Page 

 I. On the Gradual Changes in Temperature and Soil 

 whi.h take place in different Climates, witli an Enquiry into 

 tlic C^ufe of thofe Changes. By the Abbe Mann - 337 



II. Obfervations on the Vibration Nodespf Mufical Strings. 



By J. G. VoiGT of Halle - " ." " 347 



III. Agenda, or a Collefllpn of Obfervations and Re- 

 fcarches, the Refults of which may fcrve as the Foundation 



for a Theory of the Earth. By M. de Sacssure - 351 



IV. Account of a large Tree in Iiidia. By Colonel Iron- 



IDE - - - - -, - 359 



V. Account of a Banian Tree in the Province of Bahar. 



Hy Colonel IitONsiDE - ' - - - •. ^^6® 



VI. On the different Kirfds of Cadmia, and particularly . 

 thofe of Zinc and Cobalt. By I. I. Bindheim of Mofcow 362 



V!l. Siwgular Cure of a yoiwg Wo.nan, ttreiffed by ex- 

 ndlin- from the Stomach, *c. tlit Lai*v9B of certain h\(<t\i. 

 i'y M, QpHELiu* - - - ' 3C6 



