INDEX. 1357 



Spat (ref.) 57, 58, 102, 108, 117, 122, 229, 341 ; Auray, from, reared at 

 Lorient, 545 ; a most extraordinary rise and preservation of, at 

 Hayling Island, 343, 344 ; black and white together in oysters, 

 104 ; cause of exudation, 104 ; collected three times in the season 

 at Verdon, 629 ; colour of, before emission, 105 ; fall of, negative 

 or affirmative, what implied by, 106 ; heavy fall of, and value of, 

 118; from Brittany and Arcachon, difference between, 563; fall 

 of, at Swansea, in 1858, 408 ; at Lynn, in 1868, 408 ; in the Ems- 

 worth Channel, 1871, 408, 412 ; heavy fall of, in 1857, 58-59, 370; 

 in Essex, in 1881, 371 ; in 1884, 372, 373; heavy fall of, in the 

 Burnham Roach and Crouch rivers, 441 ; exhaustless supply of the 

 Portuguese oyster, 632; experimentally produced, 617, 618, 619; 

 exported from Auray, 1876-1881, 597 ; enormous destruction, 115 ; 

 great quantities disposed of by the parquers of Verdon, 632 ; 

 in the river of La Trinite, 549; misapplication of the term, 104, 

 105; M. Delidon, on, 350, 351 ; Mr. W. E. Hall's remarks on, 

 407, 408 ; nonadherence of in Langston Channel, 430 ; not yielded 

 by fat oysters, 125 ; number and value of, sold during the season 

 of 1875-6, in the district of Auray, 551 ; number of, born in 1874, 

 551 ; number of, in the pares of the district of Auray, in 1876, 551, 

 552; nursing, brewing, and exudation of, 115; time occupied in 

 operation of, 115 ; poured into oyster bed at Belon, 540; peculiar 

 system of detaching in the locality of the River Crach, 550 ; and 

 object of the method, 550; price per tub in 1859 and 1844, 366, 

 367 ; preservation of, at Hayling Island, 343, 344; puzzling results 

 in the fall of, 344 ; reared in cases at the Isles of Kistinie and 

 Lerne, 556 ; rearing in Brittany, and at Ludre, 557 ; method of 

 rearing at Les Chasses, 559 ; remarkable value of, at Whitstable, 

 125 ; received on boulders at the Ile-de-Re, 561 ; the gathering of, 

 a considerable branch of industry in Auray district, 552; torrent 

 of, in the Basin of Arcachon, 572 ; white, cause of exudation of, 

 104; the system of capturing in shut off waters, 631. 



Spat Collectors (ref.) 629 ; made of timber by the ancient Romans, 

 350 ; used to this day, 350, 495 ; not very durable, 350 ; stone, 

 shell and tile not unattended by annoyance, 350 ; M. Delidon's 

 composition for coating, 351; tiles, fascines, and schistous stones 

 used as, at Cancale, 530; at Le Vivier-sur-Mer, 531, 532; at 

 Fossemort, 535 ; placed on metallic hurdles, 544 ; collecting, unsuc- 



