X I'K !• KACK. 



pailniciil ol llic science lliey Iniiiid irnicli conrii 

 sioii, ;ui(l mimeious trrors and iniporfectioiifi — 

 the same imiiie soiiiei lines applied to purls -.mulo- 

 mieally i[mU\ dilleient, und diHeicnt names to 

 parts essentially tlie same, while others of primary 

 importanee were vvilhont any name at all. And 

 with reterenee \n the aiiatiany and physiolooy ot 

 insects, ihey «iiuld no where meet with a inll 

 and accnrate j^eneralization (d the various Tacts 

 connected with these subjects, scattered here and 

 there in the pa<,>('s of llie atithors who have stu- 

 died iheiu. 



'riiey liierefore resolved to liej^Mii, in stane mea- 

 sure, t/c i/oro — to instilntt' a ri-^orous revision ot 

 the leriiis employed, lualuiii'; such additions and 

 improvements as mi^ht seem (o he called for; 

 and to attempt a more eomplett^ and connected 

 account of the <'\istin»»- discoveries respecting the 

 anatomical and physiolof^ical departments of the 

 science ihun has yet liei'ii niven to tin- world :-— 

 and to these two points their plan at the outset 

 was limited. 



[t soon, however, occurred to them, lh;it it 

 Avoiild he of little use to writ(> a hook wdiich no 

 one would peruse ; and tlnil in the present aj^'c of 

 love lor li;.',ht r»adiu;\, there could not he much 

 hope i>f Icadiui;- students to tin- dry ahstractions 

 of the science, unless they were ciuiductcd through 



