JF Ptak Science Books LLC  Post 895

Earlier
in this blog I’ve written about underground horses

and
horses in the air (Towards a History of Horses in Flight in the 19^th
Century),

and
now to horses underwater. Or sort of. 
This image from The Illustrated London News (5 April 1919) presents a
cross-section of a proposed Hudson River tunnel connecting the Jersey
City and New York City.  (At the time, Jersey City was much more important and
productive, much mire alive than it is today.) Proposals for tunnels have been
bobbing around for quite some time, including this one that appears in the
Scientific America for 1 November 1890¹. 
The first vehicular traffic tunnel under the Hudson River—the Holland
Tunnel, connecting Hoboken and downtown Manhattan—would be completed in 1927; the Lincoln,
connecting midtown to Weehawken,
NJ, came next.in1937.(The toll
for the Lincoln in 1937 was 50 cents, or equal to $7.80 in 2009 CPI-adjusted
dollars.)

By that time there were no allowances for “slow horse-drawn trucks” that were shown in the 1919 cross section.

Notes:

1.”Progress
of the Great Railway Tunnels under the Hudson River between New
York and Jersey City.”
Scientific American, 1 Nov 1890

And  just for good measure, here’s another bit:  this time showing a horse at work in a tunnel under the Hudson: