Panspermia began to assume a more scientific form through the proposals of Joens JÃ¶ns Jacob (berzelius), 1834 Hermann. E (richter), 1865 (kelvin), 1871 hermann Von (helmholtz) 1879 and finally reaching the level of a detailed hypothesis through the efforts of The swedish Chemist Svante (arrhenius). 1903
The price of a headstone as you may guess is relative to whom you buy it from. There are many factors that can affect its price. Ultimately education will determine how much you will pay for your headstone. That means that the more you know the less likely you are to be swindled. Most headstones will range between $388.00 to $7,000.00 depending upon the size, shape and color you chose. Most people, on average, spend between $400.00 and $1700.00 on a stone for 1 person. For 2 people the average is between $850.00 and $3200.00.
Flagstone Patio Prices: The cost of a flagstone patio varies widely depending on your location, the amount of flagstone needed, as well as the type and color of flagstone. You can expect to pay between $15 and $30 dollars per square foot.