We have received a printed circular, addressed to American inventors, by Alexander Anderson, of Canada, wherein ho states " that the Canadian Government provides that its subjects may make discoveries of inventions in any foreign country, where the subjects of that country are prohibited from obtaining patents in the usual way; the British subject making an improvement on it, and combiuing his improvement with the discovery, may obtain a patent. I feel confident, from my long experience in the patent business, and my inventive powers, that I can make an improvement on almost every invention taken out. I can thus obtain the patent deed and then transfer it to the inventor." This is a very astute proposition, and is well calculated to mislead inventors who are ignorant of the exact scope of the Canadian patent system, which provides'" that any person, (f 202 subject of Her Majesty, and resident in this Province, having discovered or invented any new and useful art, machine, manufacture, or composition of matter, the same not heing Tcnmon or "Used in this province by others, may petition and obtain a patent." \ Another section provides that a patent shall be held to be void " on tlie ground that the patentee, in his specification of claims, has embraced more than that of which he was t/w firstinven- \ tor or discoverer." This puts a complete extinguisher upon the proposition made by Anderson in his circular, and we consider it our duty to " American inventors," to warn them that a patent obtained through fraud so transparent as this, would not be worth the parchment The Canadian patent system is a mockery of justice, and we advise " Mr. Alexander Anderson, Inventor and Patent Agent, Dominion of Canada," to stop sending out such circulars, and to turn his brilliant talents toward securing an amendment to the law of patents, such as will protect the rights of all inventors alike.