GLASS AND THERMOMETRIC 



Blundy, Charles (fl. 1753), Charleston, S.C.; also made watches. 



Donegan, Joseph (fl. 1787), New York and Philadelphia; also made philosophical 



instruments. 

 Fisher, Martin (fl. 1790), Philadelphia. 

 Gatty, Joseph (fl. 1794), New York asd Philadelphia; also made philosophical 



instruments. 

 Ketterer, Alloysius (fl. 1789), Philadelphia. 

 Wistar, Richard (fl. 1752), Wistarburg, N.J. 



HOROLOGICAL 



Blundy, Charles (fl. 1753), Charleston, S.C.; also made thermometric instruments. 



Burnap, Daniel (1759-1838), East Windsor and Coventry, Conn.; also made sur- 

 veying instruments. 



Chandlee, Benjamin (1723-1791), Nottingham, Md.; also made surveying in- 

 struments. 



Chandlee & Bros. (fl. 1790-1791), Nottingham, Md.; also made surveying instru- 

 ments. 



Chandlee, Ellis (1755-1816), Nottingham, Md.; also made surveying instruments. 



Chandlee, Goldsmith (1751-1821), Winchester, Va.; also made astronomical and 

 surveying instruments. 



Chandlee, Isaac (1760-1813), Nottingham, Md.; also made surveying instruments. 



Crow, George (c. 1726-1772), Philadelphia; also made surveying instruments. 



DeVacht, Joseph and Francois (fl. 1792), Gallipolis, Ohio; also made compasses 

 and sundials. 



Doolittle, Enos (1751-1806), Hartford, Conn.; also made surveying and nautical 

 instruments. 



Doolittle, Isaac (1721-1800), New Haven, Conn.; also made scientific instruments. 



Doolittle, Isaac Jr. (1759-1821), New Haven, Conn.; also made surveying in- 

 struments. 



Gilman, Benjamin C. (1763-1835), Exeter, N.H.; also made mathematical in- 

 struments. 



Gilmur, Bryan (fl. end of 18th century), Philadelphia; also made mathematical 

 instruments. 



Harland, Thomas (1735-1807), Norwich, Conn.; also made surveying instruments. 



Heisely, Federick A. (1759-1839), Frederick, Md.; also made mathematical and 

 surveying instruments. 



Heisely, George (1789-1880), Harrisburg, Pa.; also made mathematical instru- 

 ments. 



HofF, George (1740-1816), Lancaster, Pa.; also made surveying instruments. 



Huntington, Gurdon (1763-1804), Windham, Conn., and Walpole, N.H.; also 

 made surveying and other instruments. 



Kennard, John (1782-1861), Newmarket, N.H.; also made surveying instruments. 



Mendenhall, Thomas (fl. 1775), Lancaster, Pa.; also made mathematical instru- 

 ments. 



Miller, Aaron (fl. 1748-1771), Elizabethtown, N.J.; also made compasses and 

 surveying instruments. 



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