In 1851 “On the Oxides and Nitrates of Lead.” 
In 1854 “A case of Poisoning by the Sulphate of the 
Protoxide of Iron.” 
In 1855 “ On the Adulteration of Tobacco.” — “ On the 
Action of Organic Acids on Cotton and Flax Fibres.” — “ On 
the Actions of Gallic and Tannic Acids in Dyeing and Tan- 
ning.” 
In 1856 “ On the Solubility of Sulphate of Baryta in dif- 
ferent Acids.” — “ On the Purification of Polluted Streams.” 
About this time he commenced an enquiry, in conjunction 
with Mr. Kichard Johnson, on the physical and chemical 
properties of different alloys. The publications resulting 
from these investigations were ; 
In 1858 “ On the Hardness of Metals and Alloys.” — “ On 
the Conductibility of Metals and Alloys.” — “ On the Chemi- 
cal Changes which Pig Iron undergoes in its Conversion 
into Wrought Iron.” 
In 1861 a series of papers “ On the Expansion of Metals 
and Alloys.” 
In 1862 “ On the Composition of a Carbonaceous Sub- 
stance existing in Grey Cast Iron.” — “ On the Employment 
of Galvanised Iron for Armour Plated Ships.”—- On the Con- 
ductibility of Heat by Amalgams.” 
In 1863 “ On the Preservation of Iron Plated and other 
Ships.” 
The interest he took in the preservation of ships from the 
action of sea water never ceased ; many unrecorded experi- 
ments were carried on by him at intervals on this subject 
till the last days of his life. 
In 1865 Mr. Richard Johnson and he published “On the 
Action of Sea Water on certain Metals and Alloys,” and in 
1866 “On the Action of Acids on Metals and Alloys.” 
In 3 870, two papers appeared by Dr. Calvert, one “On the 
Composition of Iron Rust,” the other “On the Oxidation of 
Iron,” and a third on the same subject in 1871. 
