TY  - JOUR
T1  - On the Rectification of the Hyperbola by Means of Two Ellipses; Proving That Method to Be Circuitous, and Such as Requires Much More Calculation than Is Requisite by an Appropriate Theorem: In Which Process a New Theorem for the Rectification of That Curve Is Discovered. To Which Are Added Some Further Observations on the Rectification of the Hyperbola: Among Which the Great Advantage of Descending Series over Ascending Series,in many Cases,Is Clearly Shown; and Several Methods Are Given for Computing the Constant Quantity by Which Those Series Differ from Each other. 
JF  - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843)
VL  - 1
SP  - 393
EP  - 393
PY  - 1800/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1800.0222
M3  - doi:10.1098/rspl.1800.0222
AU  - Hellins, J.
ER  -