890 General Notes. 
also whether there are specifically formed organs for the percep- 
tion of this kind of sensation, has always been assumed in the 
affirmative sense. The naturalists of the previous century have 
recorded an abundance of observations, which have proved the 
highly-developed powers of smell at least in insects and Crus- 
c 
x 
-A 
The existence of a definite sense of smell in the greater number 
of Arthropoda is, as Perris says, “a fact for a longtime secured 
to science, for which there is need neither of arguments nor of 
proofs.” Under these circumstances, it is clear that the question 
as to the seat of the sense of smell in the Arthropods has fora 
long time aroused the interest of naturalists. An extensive litera- 
; ture on this subject has grown up in the course of years, names 
‘the first rank appearing in the history of these researches; though 
: perhaps in no field of zodlogical knowledge has such an abun- 
dance of acute, difficult work had so smalla following as in the 
examination of the organs of sense, and we are still this day, 1 
spite of the great advance in the last ten years, far from a com- 
a plete solution of the question. 
= oe _ Historical Sketch of our Knowledge of the Organs of Smell —iIn 
‘the first half of the last century began the inquiries as to the seat 
of the sense of smell in the Arthropods. Thus Réaumur, 1m his 2 
- Mémoires (1, p. 283; 11, 224), expressed in different places the 
- view that in the antennz was situated a special organ which 
might be an organ of smell. 
Be _. Ina similar way Lesser,” Roesel,? Lyonet,’ Bonnet® and others 
expressed themselves. Before this Sulzer® suggested that a? 
“ unknown sense” might exist in the antennz. All these natural- 
ists supposed that there was a common plan in the ores 
of all animals, and that they must agree with the structure 
x 
tory currents. The oldest advocate of this view app’ x 
; been Reimarus ;” following him, without knowing of the bee : 
_ Opinion, was Baster (1762). Finally, in the last decennial of t? 
i a $ oi percept pod: 
ninus, by Bensdorf; the caterpillar, by Bonnet; beetles an 
y Brunelli and Lehrman; the observations of Perris, Lespés, L 
ea | ser, in his «The Chordotonal en 
sects,” p. 76, remarks: “ For the first time exact proof has been 
ects in general become influenced by clear sound stimuli.” 
Lesser : Insécten theologie, 1740, ; 
3 Roesel: Insektenbelustigungen, 1746, IT, 51. : 
Lyonet : Traite anatomique de la chenille, 1762, 42, 96, 195- 
> 36. 
