498 



GENERAL SCIENCE. 



Hedin, Sveno Gabriel. Dissert. phys.-mechan. de Frictione Corporum 

 super piano inclinato motorum. 4°. Upsalia?, [1770.] 



Hedley, John. A Practical Treatise on the Working and Ventilation 

 of Coal Mines, with suggestions for improvements in mining. 



8°. London, 1851. 



Hedrseus, Benedictus. Nova ac accurata Astrolabii Geometrici 

 Structura nec non Quadrantis astronomici azimuthalis, una cum 

 utriusque usu. [And Tabula?.] 12°. Lugduni Batavorum, 1643. 



Hedwig", Joannes. De Eibrse vegetabilis et animalis ortu, sect. 1. 



[Program. Acad.] 4°. Lipsise, [1789.] 



Descriptio et adumbratio microscopico-analytica Muscorum 



frondosorum novorum dubiisque vexatorum. Volumen tertium. 



Eol. Lipsise, 1792. 



Hedwig, Bomanus Adolph. Disquisitio Ampullularum Lieberkiihnii 

 physico-microscopica. Sectio prima. [Thesis.] 4°. Lipsire, [1797.] 



Heer, Oswald. Elora Tertiaria Helvetia?. Die Tertiare Flora der 

 Schweiz. 3 vols. 4°. Winterthur, 1855-59. 



Flora Eossilis Arctica. . . . Die fossile Elora der Polarlander. 



Band 1-6, Abth. 1. 4°. Zurich (B. 2, Winterthur), 1868-80. 



Appendix to Band 1. C. Cramer: Ueber versteinerte Holzer der 

 arctischen Zone. 



„ „ 6, Abth. 1. C. Schroter: Untersuchung iiber 



fossile Holzer aus der arctischen Zone. 



The Primaeval World of Switzerland. Edited by James Hey- 



wood, M.A., F.R.S. 2 vols. 8°. London, 1876. 



Bovey Tracey lignite. See Pengelly and Heer. 



Heereboord, Adrianus. 'Ep^vda logica ; seu explicatio synops. Logicse 

 Burgersdicianse ; accessit praxis logica. 



1560 on title. 8°. Lugduni Batavorum, 1660. 



Heffter, Joannes Garolus. Commentatio epistolica . . . qua suscepto- 

 rum suorum rationem exponit : [followed by his] Museum dispu- 

 tatorium physico-medicum tripartitum. 



Vol 1, par. 1-3. 4°. Zittavia? Lusatorum, [1763] & 1756. 

 Hegardt, Gomel. Eicus : diss. 1744. {Linn. Amoen. i.) 



8°. Holmise, 1749. 



Hegelmaier, Friedrich. Die Athembewegungen beim Hirndruck, eine 

 Inaugural-Abhandlung. 8°. Heilbronn, 1859. 



Yergleichende Untersuchungen "iiber Entwicklung dikotyle- 



doner Keime mit Beriicksichtigung der Pseudo-monokotyledonen. 



8°. Stuttgart, 1878. 



Hegetschweiler, Joannes Jacobus. Dissert. Inaug. Zootom. de Insec- 

 torum Genitalibus . . . 4°. Turici, 1820. 



Heide, Antonius de. Anatome Mytuli, Belgice Mossel, structuram 

 elegantem ejusque motum mirandum exponene. 



12°. Amstelodami, 1684. 



— — Experimenta circa Sanguinis Missionem, Eibras motrices, 



