ounted with a bewildering mass of brass tubes and facturers to deposit at their option and at their own cost Our readers will excuse our failing to make individual ref- apparatus. An air played by the performer is suddenly ac- properly proportioned and working models of patented ma- erence to their… … ropes and cross piece; but it is not so easy to PROFESSOR RICCO’S NEW OPTICAL EXPERIMENTS. contracted to weigh. explain how, in concluding, the figure lets F. G. W.’s answer: Place the rail at right angles and hori- Tenth. That ample provision should be afforded to invent- go with its hands, throws…
Internet Archive · Public domain (published before 1931). Free to use for anything.
