Plate VI: Ammonium Urate, Showing Spherules and Thorn-Apple-Shaped Crystals

2023-01-10T15:32:44-05:00

Illustrated plate depicting crystallized deposits of ammonium urate in urine after work by Peyer [first name unknown]. As depicted here, such deposits typically consist of dark-brown, spherical masses studded with fine, sharp-pointed spicula, alternately termed "thorn-apple crystals."