[1] Mus musculus.

[2] Rattus norvegicus.

[3] Rattus rattus rattus.

[4] Rattus rattus alexandrinus.

[5] Farmers' Bulletin 461, Use of Concrete on the Farm, will prove useful to city and village dwellers as well as to the farmer.

[6] Scilla maritima.

[7] Caution.—Carbon disulphid is very inflammable and can be ignited by a match, lantern, cigar, or pipe.

[8] Farmers' Bulletin 699.