...light, Dr B. placed the fluids in a trough formed by two plates of glass cemented together at an angle. The eye being necessarily placed at one end, some...regular figure. The symmetry of this figure being very re-, markable, Dr B. set himself to investigate the cause of the phenomenon, and in doing this he discovered...

...light, Dr. B. placed the fluids in a trough formed by two plates of glass cemented together at an angle. The eye being necessarily placed at one end, some...the kaleidoscope. He found that in order to produce perfectly beautiful and symmetrical forms, three conditions were necessary. 1. That the reflectors...

...light, Dr B. placed the fluids in a trough formed by two plates of glass cemented together at an angle. The eye being necessarily placed at one end, some...the Kaleidoscope. He found that, in order to produce perfectly beautiful and symmetrical forms, three conditions were necessary. 1. That the reflectors...

...light, Dr. B. placed the fluids in a trough formed by two plates of glass cemented together at an angle. The eye being necessarily placed at one end, some...Dr. B. set himself to investigate the cause of the phencmenon ; and in doing this he discovered the leading principles of the kaleidoscope. He found that...

...Brewster placed the fluids in a trough formed by two plates of glass cemented together at an angle. The eye being necessarily placed at one end, some...symmetry of this figure being very remarkable, Dr. Brewsier set himself to investigate the cause of th« phenomenon, and in doing this he discovered the...

...Brewster placed the fluids in a (rough formed by two plater of glass cemented together at an angle. The eye being necessarily placed at one end, some...symmetry of this figure being very remarkable, Dr. Brewster set himself to investigate the cause of the phenomenon, and in doing this he discovered the...

...upon light, ])rB placed the fluids in a trough formed by two plates of g];uss cemented at an angle. The eye being necessarily placed at one end, some...had been pressed through between the plates appeared arranged into a regular figure ; the symmetry of which induced Dr. B. to investigate the cause of the...

...horizontally, for the reception of the fluids. The eye being necessarily placed without the trough, and at one end, some of the cement, which had been pressed through between the plates, at the object end of the trough, appeared to be arranged in a remarkably regular and symmetrical manner....

...of the fluids was fixed horizontally : and his eye being now placed at one end without the trough, some of the cement which had been pressed through between the plates at the object end, appeared to be arranged in a remarkably regular and striking manner. This led him...

...placed the fluids in a trough, formed by two plates of glass, cemented together at an angle ; and, the eye being necessarily placed at one end, some...appeared to be arranged into a regular figure. The remarkable symmetry which it presented, led to Dr. Brewster's investigation of the cause of this phenomenon;...