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wrought iron
Wrought iron is an iron alloy with a very low carbon (less than 0.08%) content in contrast to cast iron (2.1% to 4%), and has fibrous inclusions known as slag up to 2% by weight.it was created by Henry Cort. -
power loom
A power loom is a mechanised loom powered by a line shaft, and was one of the key developments in the industrialization of weaving during the early Industrial Revolution.It was creted by Edmund Cartwright. -
new ideas
Coke of Holkham publicised the new ideas by inviting hundreds of people to his 'sheep shearings' in agricultural shows. -
Arc Lamp
Humphry Davy invented a type of lamp where light is produced by making a strong electric current jumped between two carbon rods. -
Roads
Thomas Telford alone built 1000 miles of road, including 1000 bridges. His greatest achievement was the London‒Holyhead road. -
Economy
The rate of economic growth between 1780 and 1830 was much slower than previously thought -
schools
In 1833, the government passed the Factory Act making two hours of education a day compulsory for children working in factories. The government also granted money to charities for schools for the first time. -
Photography
is the science, art and practice of creating durable images by recording light or other electromagnetic radiation.It was created by Henry Talbot -
telegraph
Samuel Morse invented the telegraph,a system for sending messages or information by wire over a distance -
Stamp
Rowland Hill invented the postage stamp.A postage stamp is a small piece of paper that is purchased and displayed on an item of mail as evidence of payment of postage. -
bycicle
Kirkpatrick Macmillan invented the bycicle,is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. -
the Ragged Schools Union
In 1844, the Ragged Schools Union was set up to give schooling to very poor children. -
pearls of Miss Morstan
Miss Morstan visits Sherlock Holmes and shows him the pearls and a letter. -
Thaddeus Sholto
They meet Thaddeus Sholto and he tells them about his father and the treasure. -
take a cab to Pondicherry Lodge
They take a cab with Thaddeus Sholto to Pondicherry Lodge. -
Bartholomew Sholto dead.
They arrive at Pondicherry Lodge and find Bartholomew Sholto dead. -
Holmes and Watson find footprints and marks in the room
Holmes and Watson find footprints and marks in the room made by someone with a wooden leg -
the secret room.
Sherlock Holmes uses his magnifying glass to examine the secret room. -
the arrest of Thaddeus Sholto
Inspector Lestrade arrests Thaddeus Sholto for the murder of his brother. -
Watson goes to Lambeth
Watson goes to Lambeth and borrows a dog called Toby. -
Toby follows the smell of the tar
Toby follows the smell of the tar and leads Holmes and Watson to a house next to the river. -
Holmes went to the river to find the Aurora.
Holmes tries to find Mordecai Smith and the Aurora. -
Holmes chases the Aurora
Inspector Lestrade, Holmes and Watson chase the Aurora in a police boat. They kill the native and catch the man with the wooden leg. -
"The Sign of Four"
Jonathan Small tells the story of the Agra Treasure and the Sign of Four.
