4o6 



jVA TURE 



[August 22, 1895 



duced wUl be poor. With the selection of the corn which it is to 



^t 1:.T2^^ ^t'^'dLtered or proved by mathematics 

 alo^e : the discoveo- or proof of natural law requires exper.ment 

 and observation in all cases. ooirnlations of 



r^rtan, matter: for, if our P-^Pf.^"-„ -f^";;;:: "^^Yore he 



r^,ml hand book or elsewhere; using 'hese constants and fo^- 

 m,.H blindly without knowinR how they were deduced, or 



::Crat'all e'lt^rtUS rl;: .Cls Unown about 

 " '^.^^rhi'snecial work to be done in each of these subjects, 



stuflcnt should know his mathematics. 



concerns the trealmcni oi inc "J .raiment of the pure 



^u^rnUySarkSng in" !he mathematical instruction given to 



•"aH;::, method, often pursued, is to -orcise the M^den^ 

 incenuily in ,«rforming a variety of (sometimes P"«' "« 1''"' , 



S"Sr.,;5: ■ i;;-'r; ;:. ts??: ,£=». 



assmnptions made at the beginning, o m the course 



Sm:e;^,'r'y"^":^>e can make him think the more 

 successful iV'"V^'\,Tif therfbe any) who te.tch mathemaucs 



The other f»"<'='":'^l^l ^'^^""^\ ,, l.,«runent of natural 

 physics. It may ''% •'^'^^"'"t/^oveminn he various manifesta- 

 Lience which treats of ho ;^^^^ !^ '■^ "^^S ,,^.,,,i,i, ,^c. ). 



tionsof energy (•'f«''^^''='';'\"- """" \ ^.^.^^^^^^ ust those classes 



I, deals with ihe natural law »^.'\ J';''^' „ j^, joes his work. 



of bodies, »nd substances with which he eiMncerd , ^^^ 



Indeed, physics is ^ ^^\f^::\:^^'^,:Z.^c^\\<^^\ l->-ome 

 include a great many f^^^^^J^ mechanics is sometimes 

 more special ""'"f • ^., '';, ^'^^^'^mi sometimes ;ts forming a 

 ;^l^'=:fth;^i:s,^X;rmo::;:v:;;;.nder any definition physics 



includes a part of '"«''»"'"•. j^ (he suitable prcmralion for 

 Practically, a course '" 1 ^V- ^ ^ ^^^ ," nciples\/most of the 

 a proper un.lerslanding -f .'1''^,,"'^' T^ J. ,,iu' come in conlact. 

 enlnn'eering work «■' Vl^lfw", ne lie more thoroughly 

 Treaiing, a.s It do«, of <^^^ ^^^^^ ,,M he be, and an 



-.:^". ICI^w; can oii^ -•l^^;;;^.e al, mauers 



. J:tr «S^ of rineer so i ^m^^^- - 



cannot afford '" "f-\V4vereae hat there islio portion 

 It is unnecessary for me lo say. tnuu ^^^ thorough 



l:^7'JeS%;s:S^n,t'w,::^s,!:..d be inCud., ,n ,he 



course of our prospective engineer ^ ^vsical lab..ral.iry is 



Then, a certain amount of wc.k m the phy^^^^^ ^._^^ ^^^^^^ ^^^ 



:::^:::::s;rrnat^:^tiU^ ..^c.^ 



In in a physical laboraK-ry ; ^^^^^^ ^.g of jus, such 

 .,„,s, inip..nam ancl^ehca c woj^ nnoW^ ._^ ._^ ^ .^...^aniscl 

 i..xi,i.Timcnt.i! work .as nc 'W";^ . ' .laKolhe perf.>rniancc 



material. . mimbcr of experiments 



Indeed, I miKhl mention qu e a nm I ^^^.^^^ 



«hich are all-im,..rlan, '"/'^c eng Kcr an m ^ ^^ ^^^^^^^ 



i, woul.1 be dithcul, to 'I'^cide wth ^^ M ._^, ^.^^.^ 



physical laboratory or '^"K'"cerin^ l.d -ralor) _ ,,,i,,„,i.,„ 



Ihey often have ,o be performed > l,^ ^ ^'^ ,, ;„ ^le former, 



:Kr:;::;^:^;^:^-os';:^':x£en^^^ 



NO. 1347. VOL. 52] 



