Собака Баскервіллів
The Problem
"Dampandraw."
"Butnotactuallyraining?"
"No."
"WhatistheAlleylike?"
"Therearetwolinesofoldyewhedge,twelvefeethighandimpenetrable. Thewalkinthecentreisabouteightfeetacross."
"Isthereanythingbetweenthehedgesandthewalk?"
"Yes,thereisastripofgrassaboutsixfeetbroadoneitherside."
"Iunderstandthattheyewhedgeispenetratedatonepointbyagate?"
"Yes,thewicket-gatewhichleadsontothemoor."
"Isthereanyotheropening?"
"None."
"SothattoreachtheYewAlleyoneeitherhastocomedownitfromthehouseorelsetoenteritbythemoor-gate?"
"Thereisanexitthroughasummer-houseatthefarend."
"HadSirCharlesreachedthis?"
"No;helayaboutfiftyyardsfromit."
"Now,tellme,Dr.Mortimer—andthisisimportant—themarkswhichyousawwereonthepathandnotonthegrass?"