ill ]iitch, and 
small ill 
\(lluil 
main- rods, u 
iiless tliL- 
ni-ht 
:ice the sound 
at all, unl 
less till 
.V) HKOOKLV.V INSTITfT]; MITSETM. SCIENCE Kt'LLETIN 2. o- 
The \(iice of a ])ickerel frog is 
One will not he heard at a distanci. 
extreniel_\- still. Few persons would 
attention were called to it. The sound re.senibles a gentle, imisical snore 
b\- a sleejiing person. It is uninistakable if its siiorin;; ([ualit> is 
reuiembered. Its sonij, lasts about half a second, and it siui^s at iiiterx'als 
of about five minutes. 
The i>ickerel froi; usuallx- sin.i;s while it is concealed under the ;4ra>s. 
or hidden in the leaves at the ed;j,e of the water. Its clor is > ell. .wish, 
and blends with that "f dead .ura» and leaves. An obser\-er mi.t;ht 
search for Imurs and imt disenxer the source of a sound that is at his feet. 
When one is found sini;iii;4 in the open ]>art of a ]iond, the chances are 
that it will di\-e beneath the surface before a e-amera e-an be set n]> 
beside it. 
The jiickerel fro>j, be-in-, to >well out its throat as soon as it be-^ins 
its song, and b>- the time the song is comi>lcted. the .sides of its neck also 
are considerabl\' swollen. Hut it does not inflate its throat ami neck to 
nearly so great a degree as most other frogs and toads. 
The yellow of the underside of a pickerel frog is a mark bv which it 
max- be distinguished from the leopard frog. A further mark that max 
hel]i to distinguish it from the leopard frog is the absence of a light- 
colored rim around each of the dark spots of its back. 
The ]>ickerel frog is an aristocrat among frogs, as is ex'ident from the 
which it juiniis and sxviiiis. 
S. WOOD FROC; 
h\nui sy/i'ii/iii! Le Coute 
Length of body 5 to 7.60 centimeters (2 103 inches). Body and head .slender. 
Legs extremelx- long. Skin sniootli. Feet webbed. Color abox-e, rediiish or 
brownish, varying from light to almost black. .\ white line extends along the upptr 
jaxv back to the shoulders' .\ .lark i.atcli behiii.l e,uh eye. 
After a couple ..f unuMiallx warm .lays in earlx spring, the 
woodland pools will suddeiilx gixe forth a chorus .)f exj.losixe e^,u■l.;^;. 
These are the sounds made bx the w.)o.I fr.ig. The x'.iice .>f a w. "nI frog 
is like the sound made bx' a teamster clucking to his h.irses. ( )iie max- 
imitate it by placing the under side of the tip of the t.mgue agaiirst the 
