| OCR Text |
application OF THE TO THE steb ste stuby b y OF or EUCLID A valuable application of 0 f the t ha stereoscope to educational purposes pir poses has just een made every one who has gone I 1 h 0 u ith book of euclid is aware of the gr great fat eat til difficulty difficulty which is super superadded added to that of the problem itself of the cirar clrar ampre r c aloir of the diagrams d ia ams treating of solid hi fi grek gree resell lff idd is impossible to convey an accurate idea by diagrams on a flat surface sui sul face and this difficulty really reilly the greatest great pst of the two in the case of the more intricate propositions G F I 1 sa mahas has bas now brought cut a series of slides elides which when viewed in the stereoscope will be found of the greatest as abstance istance to the student when viewed in this instrument the iines lines ll 11 I 1 ne i s instead of lying flat upon the paper stretch like wires from point to point in space planes are seen to intersect each other like sheets of carabo ird inclined at various angles 1 and solid angles and pyramids bave have their edgemand edge fdge sand angular points in such tangible re a model could not pot afford a better setter cf of the text ane the letters also alad are ire lirria to f conant aa to appear 0 to o belong to the of ts to vihti ruhh h iley they r eter refer and to stand out at tie tte the proper dis alces from grom the he sj ecta tors tora |
