CHRONOLOGICAL TABLE 145 



respiration, and on "dephlogisticated air" 



(oxygen). Adam Smith's Wealth of Nations. 

 1777. Spallanzani's experiments on the spontaneous 



generation of minute organisms. 

 1781. Uranus discovered by Herschel. Leroy's Lettres 



surles Animaux (first collected edition). 



1784, Cavendish's Experiments on A ir (composition of 



water). 



1785. Hutton's Theory of the Earth. 



1787-1789. Lavoisier's Methode de nomenclature chimique 

 (1787) and Traite elementaire de chimie (1789). 



1789. First French Revolution. A. L. de Jussieu's 



Genera Plantarum. White's Natural History 

 of Selborne. 



1790. Goethe's Metamorphosen der Pflanzen. 



1791. Galvani's experiments on animal electricity. 



1792. Sprengel's Entdeckte Geheimniss der Natur. F. 



Huber's Nouvelles Observations sur les Abeilles. 

 1796. Cuvier on recent and fossil elephants. 



1798. Jenner's Inquiry (vaccination against small-pox). 



Lithography invented by Senefelder. 



1799. William Smith's Order of the Strata and their 



Embedded Organic Remains. 

 1799-1825. Laplace's Mdcanique Celeste. 



1800. Volta's electric pile. 



1807. Dalton's Atomic theory. Davy's decomposition 



of potash and soda. 



1811. Motor and sensory roots of spinal nerves dis- 



covered by Bell. 



1812. Cuvier's Ossemens Fossiles. 

 1816. Cuvier's Regne Animal. 



1819. Electro-magnetism discovered by CErsted. 



Chamisso's De Salpa. 

 1823-1831. Pollen-tubes traced to the ovule (Amici, Brong- 



niart, Robert Brown). 



1827. Discovery of mammalian ovum by Baer. 



1828-1837. Baer's Entivickelungs-geschichte. 

 1830-1832. Lyell's Principles of Geology. 



