It's the first paragraph from "The Railway Children" by E. Nesbit encrypted with a matrix transposition of size 19 by 24 and a Caesar shift of +3. Writing the message in a 24 by 19 grid and decoding the Caesar shift gives:
t e e r g k g t r w i t s s a e d a i
h n t a e s a h b i n e i a t r o i e e t h i t t r e a t a d n g h e w n n y o e l t h d y n h n v t e r l s t c w b y w i e e w c t o i h t o e a a e e e h a n p n e h h r l e h o c n n a r g a y g a s r i e d l f a m t d d s e i d s t n a e l i i a r t w r a e t n n e e o t n j d r n w o w i i g v h o w v x m o d u r f a i n a t c o e e t i e c a m m s e a r t t s h b o r h r t r e s i a t n t y h d c h e d y o a h t p k m d o a h r c o a o l d m u i i h t e e a r n e e o o l t l e o s l d o a l z m d d r d l r l a s a d e w o u s y o e i t a b o a e n f l e a a n g a n o t n h n r u t d d r o r g y t h m e l u a e d i r i a c e f n e c s t e a o s r y m c e l h o n w c n h u a a n g s y l o k d e a l c h o t i p b n d i a s i t f g d l d h i n s l p o s c c u u v h r l p l w w t v s d o u o o a d b e e o a a a a i e e a r s t f o l s u d r n s s b t n p n y
Reading down the columns gives the plaintext:
theywerenotrailwaychildrentobeginwithidontsupposetheyhadeverthoughta boutrailwaysexceptasameansofgettingtomaskelyneandcooksthepantomimezo ologicalgardensandmadametussaudstheywerejustordinarysuburbanchildren andtheylivedwiththeirfatherandmotherinanordinaryredbrickfrontedvilla withcolouredglassinthefrontdooratiledpassagethatwascalledahallabathr oomwithhotandcoldwaterelectricbellsfrenchwindowsandagooddealofwhitep aintandeverymodernconvenienceasthehouseagentssay