NOW READY, 
The MIGRATION of BIRDS 
A CONSIDERATION OF HERR GATKE’S VIEWS. 
By F. B. WHITLOCK (Author of ‘ Birds of Derbyshire,’ etc., etc.). 
Price, 3/6 net. 
Lonpon: R. H. Porrer, 7, Princes Street, Cavendish Square, W. 
BIRDS OF DERBYSHIRE. 
A FEW COPIES OF THIS WORK REMAIN UNSOLD. 
Price, 10/6 net. 
Lonpon: Bemrose & Sons, LTp., Old Bailey; or R. H. PorTER. 
UPPER TEESDALE: PAST & PRESENT. 
By J. BACKHOUSE, F.L.S. 
A handy pocket guide to the district, ies a map and several illustrations 
by t r 
CONTAINS CHAPTERS RELATING TO ANCIENT HISTORY, 
: FLORA, OnNsT nO ae &c. 
Price is. 6d. 
LONDON ©... es Sie SIMPKIN, MARSHALL & Co. 
BARNARD CASTLE... W. R. ATKINSON. 
; TO GEOLOGIST 
CAL COLLECTIONS FROM OM FAMED RTOS SERIES 
= geen 
nee coazotetor ee 
1 my t species, ‘viz. i 
I Juctatrix, Ambigua, 5 Sub-ambig' 
eee Crassatela sulcata Denali 
longzerus, Pyrus, Acicnlata, Regularis porrectus, 
taria, Triton argutus, Mur 
} Salandri, ri, Sealaris, &c. Cardita suleata, Ostrea 
asper, & gomeaay Chama squamosa, Turritella imbrica 
sPragy Tage Gc. ce. ‘ = : a 
on — T like the So sent peas much.’ Wakefield. ‘ I wish to express my « 
ion with the fossils se ; — 
send me Series pages s Salford. 
by Parcel Post, on on receipt of Postal Order. 
R. CHARLES, Naturalist, Highcliffe, Christchurch, Hants. 
ou reads, complete, 8vo, cloth, with Coloured Map. price ef 1 15, Od, 
ssT Y ‘YORKSHIRE. 
ctions, is s perhaps 
gael Le seg Volume of the aiat Seri oe "Transa - = i 
a eee weed —- a for ante ‘ise, including aie on 
se Ae éo species: 
