- Man looking up from his reading and smiling
Man looking up from his reading and smiling - Gentleman smoking a cigar
Gentleman smoking a cigar - Man shrugging
European man with hat in hand shrugging - Man smoking a cigar
Man smoking a cigar - Man reading on stage
Man reading on stage - Man with long beard
Man with long beard - Patronizing stance
Man standing in a patronizing stance - Bartender looking at beer
Bartender looking at beer - Man with money in his hand
Man looking at the money in his hand - Fore-limb of Monkey compared to fore-limb of Whale
A. Fore-limb of Monkey B. Fore-limb of Whale What is meant by homology? Essential similarity of architecture, though the appearances may be very different This is seen in comparing these two fore-limbs, A, of Monkey, B, of Whale. They are as different as possible, yet they show the same bones, e.g. SC, the scapula or shoulder-blade; H, the humerus or upper arm; R and U, the radius and ulna of the fore-arm; CA, the wrist; MC, the palm; and then the fingers. - Man
Man carrying a top hat - Gentleman explaining
Gentleman explaining - Man on the stage
Man on the stage - Two gentlemen talking
Two gentlemen talking - Excited man shouting
Excited man shouting - A Lady
A Lady - Man cleaning his glasses with a handkerchief
Man cleaning his glasses with a handkerchief - The pawnbroker
- Man rubbing his hands
- Man wringing his hands
Man wringing his hands in anticipation of making some money - The Butler
- Man in pub having a beer
Man in pub having a beer - Man in checked pant
- Man watching girl aleep in bed
- A busboy
- Unhappy man with cigar
Unhappy man with cigar - Man walking
Man walking - Pleased to meet you
Pleased to meet you, man showing respect when greeting someone - Old Lady
- How do you do
- A blacksmith
- Smiling and rubbing his hands
Man smiling and rubbing his hands - Large man looking at the puny chair
- Men
Men - A Lady
- Man carrying girl downstairs
- The Bowery night-scene
The Bowery night-scene - Man with hat in his hands
- Boy whistling
- Comparative size of molecules
An atom is the smallest particle of a chemical element. Two or more atoms come together to form a molecule: thus molecules form the mass of matter. A molecule of water is made up of two atoms of hydrogen and one atom of oxygen. Molecules of different substances, therefore, are of different sizes according to the number and kind of the particular atoms of which they are composed. A starch molecule contains no less than 25,000 atoms. Molecules, of course, are invisible. The above diagram illustrates the comparative sizes of molecules. - The Flipper of a Whale compared to the hand of man
In the bones and in their arrangement there is a close resemblance in the two cases, yet the outcome is very different. The multiplication of finger joints in the whale is a striking feature.