Geometry. **E 5010.54 Clavius, C. Opera mathematica...(Continued 1) horologiorum.-Horologiorum nova descriptio. 5. Romani calendarii &@ Gregorio XIII. restituti ex- plicatio.-Novi calendarii Romani apologia adversus Michaelem Maestilinum.-Appendix in qua J. Scaliger, © G. Germanus, & F. Vieta confutantur.-Refutatio Cyclometriae Scaligeri. Some of the treatises are independently paged; of these some have also separate title-pages. An
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